Expressions, Variables, and Exponents

 $Evaluate\ the\ \exp ression\ when\ a=4,\ b=2,\ and\ c=16.$   $What\ is\ the\ answer\ of\ "bc"?$  

• 32

• 8

• 64

• 216

Write a variable expression to represent the phrase.

"the difference of a number and 1"

• q - 1

• q + 1

• $q\ \times\ 1$

• $q\ \div\ 1$

Write a variable expression to represent the phrase.

"the quotient of a number and 3"

• $s\ \div\ 3$

• $s\ \times\ 3$

• s + 3

• s - 3

 $Evaluate\ the\exp ression\ when\ a=2.5,\ b=15,\ and\ c=3.5.$   $What\ is\ the\ answer\ of\ "\frac{b}{a}"?$  

• 6

• 4.29

• 1.4

• 0.17

You can evaluate the expression 50 - d to find the amount you have left on a $50 gift card after you have spent d dollars. Find the amount left after you have spent $18?

• 32

• 68

• 900

• 2.8

 $"z\times z\times z"$  

Write the product using an exponent.

•  $z^3$  

• 3z

• z + 3

• 3 + z

Write the power as a repeated multiplication, then evaluate the power.

"2⁵"

• 32

• 10

• 25

• 16

Evaluate the expression when n = 0.4.

"n³"

• 0.064

• 1.2

• 0.43

• 0.0256

A gift box has the shape of a cube with an edge length of 14 inches. Find the volume of the box.

• 2744 in³

• 42 in³

• 143 in³

• 38416 in³

Find the area of a square with the given side length.

"1.5 centimeters"

• 2.25 cm²

• 225 cm²

• 1.52 cm²

• 3 cm²