3-7 Practice with Inverses

What's the name of the inverse of g(x)?

• f(x)
• f^-1(x)
• y
• g^-1(x)

What is the inverse of the function
f(x) = 2x + 4   ?

• f^-1(x) = 4(x -2)
• f^-1(x) = (x-4)/2
• f^-1(x) = x/2 - 4
• f^-1(x) = x/4 + 2

• A
• B
• C
• D

• 9
• 3
• 5
• √15

• 9 - √17
• 4
• 2
• √8

• -1
• 1
• -1/3
• -5/3

When f(x) = x²-3 and g(x) = 2x+8 , find g(f(2)).

• 14
• 10
• 144
• 141

When f(x) = 9 - 3x and g(x) = 5x - 7

find f(x) + g(x).

• 14x - 10

• -8x + 2

• 2x + 2

• 2x - 2

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

• 8
• -8
• 28
• None of these.

Given f(x) = 2x and g(x) = x² + 3

find f(g(x)).

• x² + 2x + 3

• 4x² + 3

• 2x² + 3

• 2x² + 6