PLEASE HELPPP ME

On the april 3 billing date, michaelle chappell had a balance due of $ 1495.39 on her credit card. from april 3 through may 2, michaelle charged an additional $ 305.34 and made a payment of $ 800.a) find the finance charge on may 3, using the previous balance method. assume that the interest rate is 1.8 % per month.b) find the new balance on may 3.

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take