I need help solving this math word problem

Question

Membership warehouse clubs offer shoppers low? prices, along with rewards of cash back on club purchases. If the yearly fee for a warehouse club membership is? $100 and the reward rate is 2?% on club purchases for the? year, then the linear equation y equals 100 - 0.02 x y=100−0.02x models the actual yearly cost of the membership? y, in dollars. Here x represents the yearly amount of club? purchases, also in dollars.

?a) Determine the actual yearly cost of the membership if club purchases for the year
are ?$2700.
?b) What amount of club purchases would reduce the actual yearly cost of the membership
to ?$43?
?c) How much would a member have to spend in yearly club purchases to reduce the
yearly membership cost to? $0?

 

I forgot to add this part.....

A.) The actual yearly cost of the membership if the club purchases for the year are $2700 is $_____

Answer 1

a) plug in x =2700 into the given equation and solve for y

b) plug in y = 43 into the given equation and solve for x

c) plug in y = 0 into the given equation and solve for x