Question

given f(x) = 10 - 2x, find f(7).
○ -4
○ 3
○ 7
○ 56

Explanation:

Step1: Substitute x = 7 into f(x)

To find \( f(7) \), we substitute \( x = 7 \) into the function \( f(x)=10 - 2x \). So we get \( f(7)=10-2\times7 \).

Step2: Calculate the expression

First, calculate the multiplication: \( 2\times7 = 14 \). Then, calculate the subtraction: \( 10 - 14=-4 \).

Answer:

\(-4\) (corresponding to the option with -4)