Question

19 19. Which equation could best be used to determine the value f(3) for the functior f(x) = 2x + 4? A. f(3) = 23 +4 B. f(3) = 2(3) + 4 C. f(3) = 3(2x) + 4 D. f(3) = 3(3x + 4)

Answer 1

f(x) = 2(3) + 4 (option B)

Explanation:

function: f(x) = 2x + 4

f(3) = ?

To get the value of f(3), we would replace x with 3 in the function

Replacing x;

f(x) = 2(3) + 4

Going through the options, the correct one is option B