PreCalc Functions and Inverses

f(n)=x²+1
g(n)=2x-5
Find f(n)-g(n)

• x²-2x+6

• -x²+2x+4

• -x²-2x-6

• x²-2x-4

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) = 4x + 1 and g(x) = 4x - 3
Find f(x) * g(x)

• 16x² + 8x - 3
• 16x² - 8x + 3
• 16x² - 8x - 3
• 16x² - 16x - 3

Given h(x) = 2x- 1
and g(x) = 3x + 4, find (4h - 3g)(x).

• -x - 5
• -x -16
• -x + 5
• -x + 16

• x≠3 and x≠2

• x≠-3 and x≠ -2

• x≠1 and x≠5

• x≠-1 and x≠-5

Which of the following functions have a domain of [-2,∞)?

• (-∞∞)

• (-∞, 4)

• (-∞, 4]

• [4, ∞)

• (-∞, 2)

• (-∞, 2]

• (2, ∞)

• [2, ∞)

Find the inverse of f(x) = x²

• f^-1(x) = ±√x

• f^-1(x) =∣x∣

• f^-1(x) =√x

• f^-1(x) =x