Question

A gym membership costs $25 to join, plus a $12 monthly fee. If Adam has spent $133 on his gym membership this year, for how many months has he been a member?

Answer 1

133= 12x +25 (subtract 25 from both sides to isolate the x-term)

108= 12x (divide by 12 on both sides to get x alone)

x= 9 months

Explanation: