1.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?

2.Your employer contributes $80 at the end of each week to your retirement account. The account will earn a weekly interest rate of .15 percent. How much will the account be worth when you retire in 40 years?