Use the table to answer the question.

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.

Answer 1

To find the slope, we will calculate the change in cost divided by the change in number of months.

Let's take the first two data points:
(1, 74) and (2, 99)

Change in cost = 99 - 74 = 25
Change in number of months = 2 - 1 = 1

Slope = Change in cost / Change in number of months
Slope = 25 / 1
Slope = 25

Therefore, the monthly cost, or slope, of the gym membership is $25.