Test 3 Section 2 - #16 (page 518)

The first thing we want to do here is figure out what g(2) is in terms of the function f, because that's all we have a table for. They say g(x) = f(3x+1), which means:

g(2) = f(3(2)+1) 

The chart tells us that when x = 7, f(x) = -5 (which is to say, f(7) = -5), so our answer has to be (A).