1 pt

2.

What is the value of ${x}^{4}\times {x}^{5}$?

A

${x}^{2}$

B

${x}^{4}$

C

${x}^{5}$

D

${x}^{9}$

1 pt

6.

What is the value of $\frac{4{x}^{-3}}{7}$?

A

$\frac{7x}{4{x}^{5}}$

B

$\frac{4}{7x}$

C

$\frac{4}{7{x}^{5}}$

D

$\frac{7{x}^{5}}{4}$

1pt

13.

If $\frac{{x}^{17}}{{x}^{15}}=64$, then what is the value of $\frac{{x}^{12}}{{x}^{9}}$?