How do i simplify this 5a + 3b - 6a - b

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.

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.