ETA Reviewer

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Simplify completely:

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• cannot be simplified

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• 196

• 14

 $10\sqrt{45}-\sqrt{20}$  

•  $32\sqrt{5}$  

•  $88\sqrt{5}$  

•  $28\sqrt{5}$  

Rationalize the denominator:

 $\frac{5}{\sqrt{5}}$  

•  $\sqrt{5}$  

•  $\frac{1}{\sqrt{5}}$  

•  $5\sqrt{5}$  

•  $\frac{\sqrt{5}}{5}$  

Expand and simplify

 $\left(3+\sqrt{2}\right)\left(3-\sqrt{2}\right)$  

•  $7$  

•  $-7$  

•  $5$  

•  $-5$  

Simplify the expression; be sure to rationalize the denominator

• 14√x

• (7√2x)/2

• 7x

• 14√2x

If y varies directly as x, and 𝑦 = 32 when 𝑥 = 4. What is the constant of variation?

• 32

• 8

• 4

• 128

What does "y varies inversely as x" means?

• As the value of y increases, the value of x become zero

• As the value of y increases, the value of x decreases

• As the value of y decreases, the value of x also decreases

• As the value of y increases, the value of x also increases