15c
The team has fifteen members and each member sells an unknown amount of coupon books.
170 is the answer to the question
G(-2) = 8(-2) -2 = -16 - 2 = -18
g(4) = 8*(4) - 2 = 32 - 2 = 30
as you can see 30 is greater than -18 so the answer is C
missing letter is 2
missing letter is 3
missing letter is 1
Hope it is helpful to you ☺️