Answer:
Months: 10
Amount: $620
Explanation:
CG=Community Gym
CW=Workout Gym
A membership fee would be a one-time cost so you start by adding the membership cost.
CG: +70
CW: +170
A monthly fee would be a continuing cost so you multiply the fee by the number of months. If you don't know the number of months then you put a variable next to the cost of the continuing charge. Think of it as the number multiplied by the variable like this example (5*x+3). A variable can be any letter, it is m here to remind you that we're trying to figure out months.
CG: 55m+70
CW: 45m+170
Once you have your continuing fee and the one-time fee you substitute the variable for a number until you get the right number. The number that you substitute for the variable is the number of months.
CG:
(55*1)+70=125
(55*2)+70=180
(55*3)+70=235
(55*4)+70=290
(55*5)+70=345
(55*10)+70=620
CW:
(45*1)+170=215
(45*2)+170=260
(45*3)+170=305
(45*4)+170=380
(45*5)+170=395
(45*10)+170=620
Hope this was helpful, Sorry if I missed anything