To solve this problem, all we have to do is substitute in the values that the problem gave us into the expression that was provided.
The expression is:
7h + 1.5d
Where H represents the hours that Colton works and d represents the number of deliveries he makes. We know that he works for 15 hours and makes 8 deliveries, so let's substitute those values in for the variables and simplify.
7h + 1.5d
7(15) + 1.5(8)
105 + 12
117
Therefore, Colton makes $117 after working for 15 hours and making 8 deliveries.
Hope this helps!