Intro to CS FINAL

Evaluate the mathematical expression: 3 + 4 x 6 / 2.

• 12

• 15

• 21

• 42

If x represents the area of the number line colored blue, which inequality accurately reflects the value of x?

• x < 4

• x ≤ 4

• x > 4

• x ≥ 4

Twelve identical circles fit inside the rectangle as shown below. If the rectangle has a width of 32 units and a height of 24 units, what is the radius of each circle?

• 32

• 24

• 8

• 4

Karel the Dog is instructed to move forward two spaces. Then, if Karel is standing on a ball, Karel will turn left and move forward two spaces. Otherwise, Karel will turn around and move forward two spaces. Given the starting point below, where will Karel end up?

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• 
• 
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1. Which of the following describes a task effectively broken into smaller parts? 

I. Making a list of your favorite colors

II. Throwing a dinner party by making a guest list, buying ingredients, and cooking food

III. Comparing the syntax of Python and JavaScript

• I and II

• III only

• II only

• All of the above

Consider the following program code, where `hours` is an input from the user. Of the following choices, select the value for `hour` that would cause this program to print "Good Afternoon!"

• 12

• 15

• 18

• “Good Afternoon!”

Which of the following successfully switches the values of the variables x and y?  The var temp may be used as a temporary variable if necessary.

• 1. x = y;

  y = x;

• 1. var temp = x;

  y = x;

  temp = y;

• 1. var temp = y;

  x = y;

  y = temp;

• 1. var temp = x;

  x = y;

  y = temp;

1. Eliza will wear a coat if it is raining or if it is less than 50° F outside. Otherwise, Eliza will leave her coat at home.

In which of the following cases will Eliza leave her coat at home?

• It is raining and 30°F

• It is raining and 55°F

• It is not raining and 45°F

• It is not raining and 50°F

What is the difference between a for loop and a while loop?

• A for loop repeats commands a specific number of times and a while loop repeats until a condition becomes false.

• A for loop is used to make decisions between two options and a while loop is used to make decisions between 3 options or more.

• A for loop is used when the variable is less than 10 and a while loop is used when the variable is 10 or greate

• A for loop is used when we only need to meet one condition and a while loop is used when there are two or more conditions.

Consider the following program code: What is the result of running this program code?

• 0 is printed

• 1 is printed

• 3 is printed

• 6 is printed