Test Review

f(x) = 5x - 7

g(x) = 3x + 10

Find (f + g)(x).

• 8x² + 3

• 8x + 3

• 8x - 3

• 15x² - 70

f(x) = 5x - 7

g(x) = 3x + 10

Find (f - g)(x).

• 2x - 3

• 2x + 17

• 2x + 3

• 2x - 17

f(x) = 5x - 7

g(x) = 3x + 10

Find (g - f)(x).

• 2x - 3

• -2x + 3

• -2x + 17

• 2x - 17

f(x) = 5x - 7

g(x) = 3x + 10

Find (f ⋅ g)(x).

• 15x² - 70

• 15x - 70

• 15x² + 31x - 70

• 15x² + 29x - 70

f(x) = x² - 5x - 8

g(x) = 4x² - x + 3

Find (f + g)(x).

• 5x⁴ - 6x² - 5

• 4x² + 5x + 5

• 4x² + 5x - 5

• 5x² - 6x - 5

f(x) = x² + 9

g(x) = x - 6

Find (f - g)(x).

• x² + x + 3

• x² - x + 3

• x³ + 3

• x² - x + 15

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

• 8
• -8
• 28
• None of these.

Given that f(x) = x² + x and g(x) = 3x + 1, find the value of f(g(4)).

• 182
• 40
• 61
• None of the Above

When f(x) = x² - 9

and g(x) = x + 3 ,

find f(x) / g(x).

• x - 3

• x + 3

• x - 12

• x - 6

f(x) = 4x + 8

g(x) = x + 3,

Find f(x) ⋅ g(x)

• 4x² + 24

• 4x² + 20x + 24

• 4x² + 12x + 24

• 4x² + 4x + 24