What's the ans of question 30

Which is the graph of the function y=2(4)^x

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?

Can someone check if i did this correct. it’s number 4 if you’re wondering.