9514 1404 393
Answer:
x = 6
Step-by-step explanation:
Use -8 in place of f(x) and solve the resulting 2-step linear equation in the usual way.
-8 = -3x +10
-18 = -3x . . . . . . . . step 1, subtract 10
6 = x . . . . . . . . . . . step 2, divide by the coefficient of x
