Question

f(x) = -2x + 5
evaluate f(-4)

Explanation:

Step1: Substitute x = -4 into f(x)

To evaluate \( f(-4) \) for the function \( f(x) = -2x + 5 \), we substitute \( x = -4 \) into the function. So we replace every \( x \) in the function with \( -4 \), which gives us \( f(-4) = -2(-4) + 5 \).

Step2: Simplify the expression

First, we calculate \( -2(-4) \). Multiplying two negative numbers gives a positive number, so \( -2(-4) = 8 \). Then we add 5 to this result: \( 8 + 5 = 13 \).

Answer:

13