Answer:
f(3) = 17
Step-by-step explanation:
Step 1. Input the value of 3 into x
This would lead you to get f(3) = 5(3) + 2
Step 2. Multiply your terms
This gets you -> 15 + 2
Step 3. Combine like terms
This gets you f(x) = 15 + 2
Step 4. Answer
17