Question

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)
Responses

$74
$74

$49
$49

$25
$25

$37.25
$37.25
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Answer 1

The slope, or monthly cost, can be calculated by finding the change in cost over the change in number of months. This can be done by subtracting the cost for the first month from the cost for the fourth month, and then dividing by the number of months elapsed.

(149 - 74) / (4 - 1) = 75 / 3 = $25

Therefore, the monthly cost, or slope, is $25.