Functions

f(x) = 9 - 3x

g(x) = 5x - 7

Find f(x)+g(x).

• 14x-10

• -8x+2

• 2x+2

• 2x-2

f(x) = x²+9

g(x) = x-9

Find (f - g)(x).

• x²+x+9

• x²-x+9

• x²-x

• x²-x+18

f(x) = 4x+8

g(x) = x+3,

Find (f * g)(x)

• 4x²+24

• 4x²+20x+24

• 4x²+12x+24

• 4x²+4x+24

 f(x) = 3x + 10
g(x) = x - 2
Find  $\left(f\ \degree\ g\right)\left(5\right)$

• 19

• 23

• -10

• None of these.

f(x) = 3x + 10
g(x) = x - 2
Find f(g(0))

• 16
• 4
• -4
• None of these.

Tags

CCSS.HSF-BF.A.1C

p(x) = 3x + 4
q(x) =  $2x^2$  
Find  $\left(q\ \degree\ p\right)\left(-2\right)$  

• 8

• -8

• 28

• None of these.

Given
f(x) = 3x² + 7x and g(x) = 2x² - x - 1, find (f + g)(x).

• 11x² - 1
• 5x⁴ + 6x² - 1
• 5x² + 6x - 1
• 5x² + 8x - 1

Tags

CCSS.HSF-BF.A.1C

Given g(x) = -2x+2 and f(x) = 3x²+4, find (g+f)(-3).

• 39
• -27
• -23
• -19

Tags

CCSS.HSF-BF.A.1B

When  $f\left(x\right)=2x$   and   $g\left(x\right)=x^2+3$   

find $$(f\; °g)\left(x\right)$$ 

•  $x^2+2x+3$  

•  $4x^2+3$  

•  $2x^2+3$  

•  $2x^2+6$  

given  $p\left(x\right)=3x+4$   and  $q\left(x\right)=2x^2$  

Find $\left(p\ \degree\ q\right)\left(x\right)$ 

•  $10x^2$  

•  $18x^2+4$  

•  $6x^2+4$