Use the table to answer the question.

Number of months. | Cost ($)
1 | 74
2 | 99
3 | 124
4 | 149

The table below shows the cost for a gym membership at the local fitness center with an initial start-up fee charged in the first month.
Find the slope, or monthly cost.
(1 point)

A. $74

B. $49

C. $25

D. $37.25

To find the slope or monthly cost, we need to look at the change in cost for each additional month.

The change in cost from the first month to the second month is $99 - $74 = $25.

Therefore, the slope or monthly cost is $25.

The correct answer is C. $25.