1. Lawrence's parents pay him a base allowance of $10 per week and $3.20 per hour for extra chores he completes. Mr. Williams pays Lawrence $7.80 per hour to fix broken washing machines at the laundromat. Which equation
models Lawrence's total weekly income?

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?