CH 1 Review to aid final exam review Pre-Calc

Simplify:

 $\sqrt{50}$  

• 5

• 2 $\sqrt{25}$  

• 5 $\sqrt{2}$  

• 25 $\sqrt{2}$  

Simplify:

 $\sqrt{32}+\sqrt{18}$  

•  $\sqrt{50}$  

• 5 $\sqrt{2}$  

• 7

• 7 $\sqrt{2}$  

Solve:

 $3x^2\ =\ 48$  

•  $\pm4$  

•  $\pm6$  

•  $\pm12$  

•  $\pm15$  

Find the domain:

 $y\ =\ \sqrt{x\ +\ 5}$  

•  $\left(-\infty,\ \infty\right)$  

• [-5,  $\infty$  )

•  $\left(-5,\ \infty\right)$  

• [-5, 5]

Find the equation and domain

• y = x + 2, $-2\le x\le2$

• y = 2x + 1, $-2\le x\le2$

• y = 2x - 1, $-4\le x\le4$

• y = 2x + 2, $-3\le x\le5$