Question

Given that f(x) = 2x −5, find the value of x that makes f(x) = 15. (5 points)

5

10

20

25

Answer 1

the correct answer is B

Answer 2

First you must set f (x) =15:
15 = 2x - 5
Now you must solve like a normal equation:
15 = 2x - 5 )+5
20 = 2*x ):2
10 = x

ANSWER: The value of x is 10