Question

Given f(x) = 8x - 15 , find x when f(x) = 9 .

Answer 1

f(x) = 8x - 15

9 = 8x - 15

3(3) = 8x - 15

9 = 8(3) - 15

9 = 24 - 15

9 = 9

Answer 2

Answer:

x=3

Step-by-step explanation:

Move all terms that don't contain  x   to the right side and solve.

x = 3