Answer:
If Casey plans to cancel in 5 months, the gym with the $150 joining fee and $35 per month cost is the better option for him.
The total cost of the gym with the $150 joining fee and $35 per month cost for 5 months would be $150 + (5 * $35) = $275.
The total cost of the gym with no joining fee and $60 per month cost for 5 months would be (5 * $60) = $300.
Therefore, Casey would save $300 - $275 = $25 by choosing the gym with the $150 joining fee and $35 per month cost.