Question

17 mark for review the function f is defined by f(x) = ½(x + 6). what is the value of f(4)? a 20 b 12 c 10 d 5

Explanation:

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

Given \( f(x)=\frac{1}{2}(x + 6) \), substitute \( x = 4 \): \( f(4)=\frac{1}{2}(4 + 6) \)

Step2: Simplify the expression

First, calculate inside the parentheses: \( 4 + 6 = 10 \). Then multiply by \( \frac{1}{2} \): \( \frac{1}{2} \times 10 = 5 \)

Answer:

D. 5