You earn a monthly salary of $1000 plus a 2% commission on your total sales for the month. your total sales for this month were $10,500. what were your total earnings for this month?

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?