Question

Evaluate f(x) = 2x + 8 when x = -2, x = 0, and x = 5.

a) When x = -2, f(x) = 4
b) When x = 0, f(x) = 8
c) When x = 5, f(x) = 18
d) When x = -2, f(x) = 8

Answer 1

When evaluating the function f(x) = 2x + 8 for different values of x, we find that a) When x = -2, f(x) = 4. b) When x = 0, f(x) = 8. c) When x = 5, f(x) = 18.

Step-by-step explanation:

When evaluating a function, we substitute the given value of x into the function's formula and simplify.

Evaluation:

a) When x = -2, f(x) = 2(-2) + 8 = -4 + 8 = 4

b) When x = 0, f(x) = 2(0) + 8 = 0 + 8 = 8

c) When x = 5, f(x) = 2(5) + 8 = 10 + 8 = 18

The correct evaluation for each value of x is:

a) When x = -2, f(x) = 4

b) When x = 0, f(x) = 8

c) When x = 5, f(x) = 18