How to solve the function problem for this one?

a. f(12) = - 1

b. x = 27 when f(x) = 4

Step-by-step explanation:

We are given that and we want to find f(12) and f(x) = 4

To find f(12) we simply plug in 12 into x and evaluate it

plug in 12

multiply 12 and 1/3 to get 4

subtract 5 from 4 to get -1

Now we want to find the value of x when f(x) = 4

To do this we substitute 4 for f(x) and solve for x

substitute 4 for f(x) and solve for x

add 5 to both sides

multiply both sides by 3

27 = x

And we are done.

So f(12) = -1 and x = 27 when f(x) = 4

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step-by-step explanation: