Question

If f(x) = 7(x - 2) + 4(x + 1), what is f(2)?

A. 9 B. 10 C. 12 D. 11

Answer 1

Answer:

C) 12

Step-by-step explanation:

These type of questions is basically asking you to replace x with 2. f(x) is the same thing as y = but inside the f(x) is the value of x. So in this case, the numerical value of x is 2. All we need to do is replace x with it's numerical value, 2, and solve the equation.

$y=7(2-2) + 4(2+1)\\y=7(0) + 4(3)\\y = 12$

Answer 2

I think the answer is c.12