Hopefully the pictures are not upside down

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?

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16