To find the cost of each additional hour, we need to look at how the total cost changes as the number of hours increases. From the table, we can see that the total cost increases by $14 from 2 hours to 4 hours, by $7 from 4 hours to 5 hours, and by $21 from 5 hours to 8 hours.
So the cost of each additional hour depends on the time interval. To calculate the cost of each additional hour, we can divide the change in cost by the change in time.
From 2 to 4 hours, the cost increases by $14 for an additional 2 hours, so the cost of each additional hour is:
$14 ÷ 2 hours = $7 per hour
From 4 to 5 hours, the cost increases by $7 for an additional 1 hour, so the cost of each additional hour is:
$7 ÷ 1 hour = $7 per hour
From 5 to 8 hours, the cost increases by $21 for an additional 3 hours, so the cost of each additional hour is:
$21 ÷ 3 hours = $7 per hour
We can see that in each case, the cost of each additional hour is $7.
Therefore, the equation to represent the pricing plan is:
C = 7h + 25