QUESTION 8,9,10,11, PLEASE DO ALL OF THEM I WILL MARK BRAINIST!!!

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 greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

Determine which postulate or theorem can be used to prove that lmn =nmo