1.2, 3, 7.5, 18.75, ... Which formula can be used to describe the sequence?
f(x) = 1.2(2.5)x – 1
f(x) = 2.5(1.2)x – 1
f(x) = 1.2(2.5)x
f(x) = 2.5(1.2)x

1.2(2.5)x - 1

Step-by-step explanation:

I think it is C because $125 is a 1 time fee . $0.50 however is is the cost each time they want to decorate. and $5.00 is the cost for each shirt. So you add them because they want silk-screened meaning they will pay $5.00 and 0.50 for design together.