Answer:
I believe the equation is $50 + $15m = $275
Explanation:
Since you're writing an equation, there must be an equal sign involved. (An expression does not have an equal sign)
Let's start:
We know that you have to pay $50 as a starting fee and it costs an additional $15 PER month. The problem tells you that the variable "m" represents the number of months you spend as a member...thus:
$50 + $15m
and since the total cost for the gym was $275...
Your answer should be $50 +15m = $275
Hope this is useful :D