Evaluate Functions and Operations

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

Perform the indicated operation.

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

• 14x - 10

• -8x + 2

• 2x + 2

• 2x - 2

When f(x) = x² + 9 and g(x) = x - 9, find f(x) - g(x).

• x² + x + 9

• x² - x + 9

• x² - x

• x² - x + 18

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)=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

Given f(x) = -x + 4 and g(x) = 6x + 3, find (f(x) - g(x))

• -7x + 1

• 5x +1

• -5x -1

• 5x + 1

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

• 5n + 1

• -5n + 1

• -2n + 1

• -6n - 1

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

f(x) = x²+9
g(x) = x-9
Find f(x)-g(x). 

• x²+x+9

• x²-x+9

• x²-x

• x²-x+18