Answer:
f(9) = 8
Step-by-step explanation:
Step 1: Define
f(x) = x - 1
f(9) is x = 9
Step 2: Substitute and Evaluate
f(9) = 9 - 1
2/3x = 6
Multiply both sides by 3x
2 = 6.3x
2 = 18x
x = 2/18
x = 1/9
4/2, 2/7, 1/2, 5/6 is your answer
