7-7 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

Tags

CCSS.HSF-BF.A.1B

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

Tags

CCSS.HSF-BF.A.1B

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  $\left(j\cdot k\right)\left(x\right)$  

•  $5x+5$  

•  $6x^2+6$  

•  $6x^2+6x+6$  

•  $6x^2+13x+6$  

Tags

CCSS.HSF-BF.A.1B

If f(x) = 2x + 1 and g(x) = 3x² - 8,

find f(g(x))

• 12x² + 12x - 5

• 6x² - 15

• 6x² - 7

• 3x² + 2x - 7

Tags

CCSS.HSF-BF.A.1C

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.1B

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

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

Tags

CCSS.HSF-BF.A.1B

Given f(x) = 3x² - 2x + 1 and           g(x) = x - 4, find (f*g)(x). 

• 3x³ - 10x² - 7x - 4
• 3x³ - 14x² + 9x - 4
• 3x² - x - 3
• 3x³ + 14x² - 9x - 4

Tags

CCSS.HSF-BF.A.1B

Given f(x) = x² + 5 and g(x) = 2x³ - 1,
find (f/g)(-3).

• -14/55
• 14/55
• 2
• -2

Tags

CCSS.HSF-BF.A.1B

f(n)=2n+1
g(n)=3n
Find f(n)+g(n)

• 5n+1
• -5n+1
• -2n+1
• -6n-1

Tags

CCSS.HSF-BF.A.1B