What is the product of 630 and 7.2 x 104 expressed in scientific notation?

Which function is shown in the graph below?

Answer this question! 30 points and brainliest! only if you know the answer.

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?