Javascript Final Review

Front

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

Back

15

Front

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

Back

x < 4

Front

Twelve identical circles fit inside the rectangle with a width of 32 units and a height of 24 units. What is the radius of each circle?

Back

4

Front

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?

Back

Front

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

Back

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

Front

Consider the following program code, where hours is an input from the user.
if(hours <= 12){
println("Good morning!");
} else if(hours < 16){
println("Good afternoon!");
} else {
println("Hello!");
}
Of the following choices, select the value for hour that would cause this program to print “Good Afternoon!”: 12, 15, 18, “Good afternoon!”

Back

15

Front

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.
Options:
x = y;
y = x;
,
var temp = x;
y = x;
temp = y;
,
var temp = y;
x = y;
y = temp;
,
var temp = x;
x = y;
y = temp;

Back

var temp = x;
x = y;
y = temp;

Front

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

Back

It is not raining and 50°F

Front

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

Back

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

Front

What is the result of running the following program code?
var sum = 0;
for(var i = 0; i < 3; i++) {
sum += i;
}
println(sum);

Back

3 is printed