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1 Jack and his friends are collecting cans for the food bank. Thus far, they have collected 1500 cans. Jack has collected 60 percent of the cans. Marcia has collected 25 percent of the cans. How many cans have their other friends collected thus far?
Incorrect. Please choose another answer.
To find what percentage of cans Jack and Marcia's friends have collected, first determine the total percentage that Jack and Marcia have collected:  

60% + 25% = 85%

To determine what percent the friends collected, substract Jack and Marcia's total from 100%:

100% - 85% = 15% collected by the friends.

To determine what part of 1500 cans is 15%, multiple 1500 by .15:

1500 x .15 = 225 cans

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2 Solve 3/4 + 1/3 =
Incorrect. Please choose another answer.
To add fractions, you will need to find a common denominator:

3/4 + 1/3 =

9/12 + 4/12 = 13/12

which is obtained by adding the numerators.
3 The arrow is pointing to the _______________________ .
Incorrect. Please choose another answer.
A mitral valve is between the upper and lower left heart chambers and opens to let blood flow from the left atrium to the left ventricle.  When it closes, it prevents blood from moving backwards.
4 What role does DNA play in the S phase of the cell cycle?
Incorrect. Please choose another answer.
In the S phase of the cell cycle, DNA duplicates itself.  The process is known as DNA replication.  In this process, the double helix uwounds itself and each strand serves as a template for the synthesis of a new complimentary strand. 

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5 Solve 4 + (-3)*2 =
Incorrect. Please choose another answer.
Under the power of operations, mulitiplication is carried out before addition:

4 + (- 3 x 2) =

The multiplication of a postive number with a negative number results in a negative number.

4 - 6 = - 2
6 Casey walked 2.1 miles to the grocery store. She then walked 0.5 miles to the post office and 0.8 miles to work. How far did she walk in total? Convert your answer into kilometers.
Incorrect. Please choose another answer.
To answer this problem, first add up the miles Casey walked:

2.1 miles + .5 miles + .8 miles = 3.4 miles

Convert miles to kilometers multiplying miles by 1.60934:

3.4 miles x 1.60934 miles per kilometer = 5.47 km
7 What does the pH scale measure?
Incorrect. Please choose another answer.
The ph scale measures the acidity or alkalinity of a solution. This is done by measuring the concentration of hydrogen ions in a solution.

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8 Prime time is the slot when most households are watching television. Like popular series and documentaries.  

Identify the answer below that corrects the fragment.
Incorrect. Please choose another answer.
There is no need for puntucation to complete the sentence with the fragment. The "like" in this sentence is an adjective modifying the noun television.
9 Solve 5²*3 + 40 =
Incorrect. Please choose another answer.
By the order of operations, you first resolve 52 or 5 x 5, which equals 25.  Next, multiple 25 by 3, which is 75.

75 + 40 = 115
10 Solve and convert your answer into a mixed number: 3.5 + 0.25 -1.00 =
Incorrect. Please choose another answer.
3.5 + 0.25 -1.00 = 2.75

2.75 = 2 3/4

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11 Which system of the human body is responsible for ensuring that nutrients are delivered to all organs and tissues?
Incorrect. Please choose another answer.
The circulatory system is a transportation system delivering oxygen and nutrients from digested food to cells and tissues of the human body.  The digestive system breaks food down into smaller molecules. The nutrients are absorbed into the blood stream, primarily in the small intestine.
12 An integer is a number that is a fraction.
Incorrect. Please choose another answer.
An integer is a whole number, not including fractions and decimals. It includes positive and negative numbers and zero. An example of an integer is 4 or -4.
13 If "x" is equal to 6, what is the value of the following expression? y = 2x + 9x + 3
Incorrect. Please choose another answer.
y = 2x + 9x + 3

y = 2(6) + 9(6) + 3

y = 12 + 54 + 3

y = 69
 

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14 A controlled experiment can only test _____.
Incorrect. Please choose another answer.
A controlled experiment tests the effect of one specific variable, also called the independent variable, on a dependent variable.
15 The passageway that is used for food and for breathing is the:
Incorrect. Please choose another answer.
The pharynx is the throat. It is the passageway for the respiratory system and the digestive system. The esophagus is a tube in the throat that carries food from the mouth to the stomach. The trachea is the windpipe that carries air from the nose and mouth to the lungs. The larynx is the voicebox.
16 Which of the following is NOT considered part of the central nervous system?
Incorrect. Please choose another answer.
The central nervous system consists of the brain and the spinal cord.

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17 Which of the following is the basis of the ocean's food chain?
Incorrect. Please choose another answer.
The basis for the ocean's food chain is phytoplankton which is a microscopic plant-like organism. They use sunlight to produce energy through photosynthesis. Phytoplankton are eaten by small fish, which are eaten by bigger fish.
18 Animals cells are many times the size of bacterial cells. Approximately how much larger are they?
Incorrect. Please choose another answer.
Animal cells are 10-100 times larger in diameter than bacterial cells. The size difference is due to animal cells contianing complex internal structures that bacterial cells do not have.
19 Choose the correct way of writing the following sentence:
Ilene stewart has lived in the same house on howard Street in Hobart Wisconsin for 26 years
Incorrect. Please choose another answer.
Commas are used to separate nonessential or additional information in the sentence (on Howard Street) and after a city and state name.

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20 Use the following passage to answer questions 20-23.

The Vardez family went on a cruise last year. Their ship, The Golden Sun, left from Miami on a Tuesday. They stopped in Key West on Thursday before heading to the Bahamas. The ship docked in Cococay on Saturday and Nassau on Monday. Finally, the ship sailed to New York City. They arrived on Friday and flew back to Miami that day. The exhausted family was happy to be home.

How many ports of call inside the U.S. did the Vardez family visit?
Incorrect. Please choose another answer.
The Golden Sun was in three ports of call in the U.S. when the Vardez family was aboard: Miami, Key West and New York City.
21 How long was the cruise overall?
Incorrect. Please choose another answer.
The cruise started on Tuesday and ended the following Friday, which is eleven days.
22 Did the Vardez family enjoy their vacation?
Incorrect. Please choose another answer.
The passage states that the Vardez family was happy to get home, but it does not provide informaiton on how they liked their vacation.

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23 Where did the Vardez family spend the majority of their vacation?
Incorrect. Please choose another answer.
Based on the passage, the Golden Sun was at sea for at least 6 of the 11 days of the cruise.
24 Choose the answer that corrects the error with a comma, semicolon, dash or colon. 

The weather I believe is hot in Florida.
Incorrect. Please choose another answer.
Commas are used to separate nonessential or additional information in the sentence (I believe). 
25 Describe the correlation between height and hair length.
Incorrect. Please choose another answer.
There is no correlation between one's height and one's hair length.

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26 Answer questions 26-28 using the information contained in the following passage.

The horse has long held a place in the mythology of almost every culture. Horses were first depicted in caveman paintings more than 32,000 years ago, but they were not domesticated until approximately 6,000 years ago. The horse was first domesticated in Kazakhstan by the Botai people. It was not long before horses were being used as a means of transportation and as a beast of burden. They soon became far more than just another way to get around, however, as a special bond quickly sprang up between horses and their handlers that still exists to this day. Horses have a special partnership with man, and that is why they are still so popular.

What is the main idea of this passage?
Incorrect. Please choose another answer.
The main idea of this passage is that horses have had a long special relationship with humans.  It states that the first evidence of man's relationship with horses is shown in cave paintings over 30,000 thousand years ago, mentions that horses were domesticated 6,000 years ago and states how humans and horses have developed a relationship beyond the utilitarian. 
27 How long ago were horses domesticated?
Incorrect. Please choose another answer.
The passage states that horses were domesticated by humans 6,000 years ago in Kazakhstan by the Botai people.

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28 Who first domesticated the horse?
Incorrect. Please choose another answer.
The passage states that horses were domesticated in Kazakhstan by the Botai people.
29 Find the area of the shaded region.
Incorrect. Please choose another answer.
To find the area of this shape, break it into three shapes: a square, rectangle and right triangle.

Cacluate the area of the three shapes and then add them together.

Square:  9 cm x 9 cm = 81 cm2

Rectangle: 7 cm x 2 cm = 14 cm2

Right triange: .5 x 2 cm x 2 cm = 2 cm2

81 cm2 + 14 cm2 + 2 cm2 = 97 cm2

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30 Find the value of "y" in the following expression, assuming that "x" is equal to three:

3y = 6x + 3x + 36
Incorrect. Please choose another answer.
3y = 6x + 3x + 36

If x = 3, then:

3y = 6(3) + 3(3) + 36

3y = 18 + 9 + 36

3y = 63

y = 63/3

y = 21