Answer:
324
Step-by-step explanation:
Given:

Find:

First, find f(x):

Now,

1)
LHS:

LHS = RHS. So, the statement is true
2)
LHS:

LHS not equal to RHS. So, the statement is false
3)
LHS:

LHS = RHS. So, the statement is true.
4)
LHS:

LHS = RHS. So, the statement is true.
Divide 4 to both sides of the equation
Answer:
3.5
Step-by-step explanation: