Algebra-1

For Ryan's Rafts, we can calculate the slope by taking any two points on the line and finding the change in cost divided by the change in time. Let's use the points (1, $15.00) and (5, $24.00):

Slope for Ryan's Rafts = (Change in cost) / (Change in time)

                       = ($24.00 - $15.00) / (5 - 1)

                       = $9.00 / 4

                       = $2.25 per hour

For Water's Edge Rafts, we can calculate the slope using the ...