What is unit form of (4 ten thousand 8 hundreds)÷10

(98 points) i need with 5 questions. answer definitions are welcomed, but not necessary.

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

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?