You give a salesperson $20 for a purchase and recieve change. use your funcktion to find the amount of change from a $4.50 purchase

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

Describe the relationship between the angles of similar triangles and the sides of similar triangles

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?