Operations on Functions

if f(x) = 3x + 2 and g(x) = 11 - 5x,

find (f + g)(x)

• -2x + 13

• -2x + 9

• 8x + 13

• 8x + 9

If g(x) = x² - 4x - 7 and h(x) = 5x² - 8,

find (g - h)(x)

• 6x² - 4x - 15

• -4x² - 4x - 15

• -4x² - 4x + 1

• -5x² - 4x + 1

If f(x) = x³ and g(x) = 3x - 5

find f(g(3))

• 76

• 64

• 16

• 12

if j(x) = (2x + 3) and k(x) = (3x + 2)
find  $\left(j\cdot k\right)\left(x\right)$  

•  $5x+5$  

•  $6x^2+6$  

•  $6x^2+6x+6$  

•  $6x^2+13x+6$  

If f(x) = 2x + 1 and g(x) = 3x² - 8,

find f(g(x))

• 12x² + 12x - 5

• 6x² - 15

• 6x² - 7

• 3x² + 2x - 7

if f(x) = { (0, 5), (-2, 6), (-9, 7) }
and g(x) = { (1, 0), (-1, -9) }
find  $f\circ\ g$  

•  $f\circ\ g$  doesn't exist

• { (0, 1), (-9, -1) }

• { (1, 0 ), (-1, -9) }

• { (1, 5), (-1, 7) }

• A

• B

• C

• D

Tags

CCSS.HSA.APR.A.1

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3

• A

• B

• C

• D

Tags

CCSS.HSA.APR.D.6

CCSS.HSA.APR.D.7

• A

• B

• C

• D

Tags

CCSS.HSA.APR.A.1

• A

• B

• C

• D