Question

Given the function below, find x if f(x)=11
f(x) = 3x + 5

Answer 1

x = 2
plug in 11 into f(x) and you get 11 = 3x + 5
subtract 5 from both sides and you get 6 = 3x
divide 3 from both sides and you get x = 2
if you plug in 2 for x, you should get 11.