1 pt

2.

Write –27 as an exponential expression.

A

${3}^{3}$

B

9 – 3

C

${(\u20133)}^{3}$

D

$\u2013{9}^{2}$

1 pt

8.

Which property describes the following expression: 7 + 18 = 18 + 7?

A

Associative Property of Addition

B

Distributive Property

C

Commutative Property of Addition

D

Identity Property of Addition

1 pt

13.

The variable in the expression 9x + 63 is

A

x

B

9

C

63

D

=