Answer:
Felix paid 11 months.
Step-by-step explanation:
With the information provided, you can say that the cost to use the local recreation center is equal to the annual fee plus the result of multiplying the cost per month for the number of months, which can be expressed as:
Total cost=20+15x, where:
x is the number of months
Now, you can replace the total cost with 185 that is the amount that Felix paid and solve for x to find the number of months he paid:
185=20+15x
185-20=15x
165=15x
x=165/15
x=11
According to this, the answer is that Felix paid 11 months.