How is this problem differentiated?

Ahome improvement store rents it’s delivery truck for $19 for the first 75 minutes and $4.75 for each additional 1/4 hour. if a customer rented the truck at 11: 10 am and returned the truck at 1: 40 pm the same day, what would his rental cost be?

To determine the number of deer in a forest a forest ranger tags 280 and releases them back

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take