Final answer:
The expression for f(x+2) is 3x - 15. Therefore, the correct option is B.
Step-by-step explanation:
To find the expression for f(x+2), we substitute x+2 into the given expression for f(x). So, we have:
f(x+2) = 3(x+2) - 17
Simplifying, we get:
f(x+2) = 3x + 2 - 17
f(x+2) = 3x - 15
Therefore, the expression for f(x+2) is 3x - 15. Therefore, the correct option is B.