Robert invests $800 into an account at 1.8% interest compounded annually. He will
make no deposits or withdrawals on this account for 3 years. Which formula could be
used to find the balance, in the account after 3 years?

Martha is training for a duathlon, which includes biking and running. she knows that yesterday she covered a total distance of over 55.5 miles in more than than 4.5 hours of training. martha runs at a speed of 6 mph and bikes at a rate of 15.5 mph.