Function Operations

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

find f(x) + g(x).

• 14x - 10

• -8x + 2

• 2x + 2

• 2x - 2

f(x)=2x + 4

g(x)=3x² - 1

Find f(x) ⋅ g(x)

• 6x⁴ + 12x³ - 4x² - 8x

• -6x³ + 12x² + 2x - 4

• 6x³ + 12x² - 2x - 4

• 5x² - 18x + 20

f(n)= n² + 4n

g(n)= - n - 5

Find f(n) + g(n)

• n² + 3n - 5

• -n³ + 2n - 7

• n³ + 3n - 3n

• n² - 3n - 5

Perform the indicated operation.

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• -14/55
• 14/55
• 2
• -2

• 39
• -27
• -23
• -19

Given p(x) = x - 2 and q(x)=2x+5,

find p(-4) - q(-4).

f(x) = 3x² - 4x + 5

g(x) = 5x - 1

Find (f ⋅ g)(x).

• 15x³ - 23x² + 29x - 5

• 15x³ - 4x - 5

• 15x³ + 4x + 5

• 15x³ + 23x² - 29x - 5

Answer explanation