Precalc Quiz 1.1-1.4

 $f\left(x\right)\frac{\left(x-8\right)}{x^2+2x-80}$  Determine the domain.

•  $\left(-\infty,-10\right),\left(8,\infty\right)$  

•  $\left(-\infty,-8\right),\left(10,\infty\right)$  

•  $\left(-\infty,-10\right),\left(-10,8\right),\left(8,\infty\right)$  

•  $\left(-\infty,-8\right),\left(-8,10\right),\left(10,\infty\right)$  

Determine the domain:

 $f\left(x\right)=\sqrt{5x-3}$  

•  $\left(-\infty,\frac{3}{5}\right),\left(\frac{3}{5},\infty\right)$  

•  $\left(\frac{3}{5},\infty\right)$  

•  $\left(-\infty,\frac{3}{5}\right]$  

•  $\left[\frac{3}{5},\infty\right)$  

Find

 $\left(fg\right)\left(x\right)$  given  $f\left(x\right)=2x+4,\ g\left(x\right)=3x^2-1$  

•  $6x^4+12x^3-4x^2-8x$  

•  $6x^3+12x^2-2x-4$  

•  $-6x^3+12x^2+2x-4$  

•  $5x^2-18x+20$  

 $\left(\frac{f}{g}\right)\left(2\right)$  

Find

•  $0$  

•  $1$  

•  $2$  

• undefined

 $\left(f-g\right)\left(x\right)$  

given  $f\left(x\right)=x^2+9,\ g\left(x\right)=x-9$  

•  $x^2+x+9$  

•  $x^2+x$  

•  $x^2-x+9$  

•  $x^2-x+18$  

Write the equation of the line through (7, 10) perpendicular to the line that goes through (7, -2) and (9, -1)

• $y=-2x+24$

• $y=-2x-24$

• $y=-2x+12$

• $y=\frac{1}{2}x-12$

Which best describes the relation: $y=7x^8-9x^2+33$  

• even function

• odd function

• neither even nor odd, but a function

• not a function

 $y=\frac{\left(x^3+x\right)}{3x^2-4}$  

Which best describes:

• even function

• odd function

• neither even nor odd, but a function

• not a function

Describe the given graph:

• even function

• odd function

• neither even nor odd, but a function

• not a function

• $1020

• $840

• $1140

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