Math III - 1.1 DHQ (1st) 3/29

If  $f\left(x\right)\ =\ x-1$ and $g\left(x\right)=5x-2$ , then  $\left(f-g\right)\left(x\right)=$ 

• -4x - 3

• -4x +1

• 6x + 1

• 6x - 3

Find f(3) + g(2) if f(x)= x+2 and g(x)=5x-1

• 2
• 5
• 9
• 14

If  $f\left(x\right)\ =\ x+5$ and $g\left(x\right)=3x-7$ , then  $\left(f\circ g\right)\left(x\right)=$ 

•  $3x-2$ 

•  $3x+8$  

•  $3x^2+8x-35$  

•  $3x-12$  

If $f\left(x\right)=5x$ ,  $g\left(x\right)=-2x+1$ , and  $h\left(x\right)=x^2+6x+8$ , find  $f\left(g\left(-2\right)\right)$ .  (Your answer should be a number.)