The table below shows thw cost for a gym membership at the local fitness center with an initial start up fee changed in the first month. Find the slope, or monthly cost.
1 74
2 99
3 124
4 149
To find the slope, we need to determine the rate of change in the monthly cost. We can do this by calculating the difference in the monthly cost for each consecutive month.
- Difference between month 1 and month 2 = 99 - 74 = 25
- Difference between month 2 and month 3 = 124 - 99 = 25
- Difference between month 3 and month 4 = 149 - 124 = 25
Since the difference is consistent at 25 for each consecutive month, the slope (monthly cost) is $25.