(8.08×10^12)−(6.52×10^11) in scientific notation

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?

If you are just building your payment history, how many points from a perfect score will you possibly miss?

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth