Function Operation Composition Practice Abigail Sattler

What is (fg)(x)?

• (2x-4)/x

• 1/(2x-4)

• (2/x)-4

• DNE

What is (g/f)(-1)?

• -6

• -1

• 1/6

• 6

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

What is (g/f)(x)?

• (2x-4)/x

• 1/(2x²-4x)

• x/(2x-4)

• (2x-4)(x)

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

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

f(x)=3x²+1
g(x)=4x+5
What is (f+g)(2)

• 13

• 0

• 26

• 6x²+8x+12

h(x)=x²-3x-10,
j(x)=3x-2
What is (h/j)(-2)

• -2

• undefined

• 0

• 1

When f(x) = 2x and g(x) = x²+3 , find f(g(x)).

• x²+2x+3

• 4x²+3

• 2x²+3

• 2x²+6

p(x) = 3x + 4
q(x) = 2x²
Find q(p(-2))

• 8

• -8

• 28

• None of these.