Mia is saving money. Mia started with $9 and added $10 every week. Find the rate of change.

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?

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).