Operations with Functions Practice (evaluate, add, subtract)

Evaluate f(x) = x² for f(-8)

• 64
• -64
• -16
• 16

• 24

• -6

• 32

• 36

Evaluate g(x) = 13 if g(x) = 3x + 4

• x = 19

• x = 43

• x = 3

• x = 39

If f(x) = 2x² + 5x - 3, evaluate f(-1).

• f(-1) = -6

• f(-1) = 1

• f(-1) = -10

• f(-1) = -1

If f(x) = 2x² + 5x - 3, evaluate f(4).

• f(4) = 4

• f(4) = 49

• f(4) = 25

• f(4) = 55

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(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) = 2n+1

g(n) = 3n

Find f(n) + g(n)

• 5n+1

• -5n+1

• -2n+1

• -6n-1