ron's checking account pays 0.75% interest monthly and a $7.50 service fee, total balance last month was $825, find the amount of credit or debit to the account after interest and service fees are both applied.
Interest = 825 * .0075 = $6.19
Service charge = $7.50
7.50 - 6.19 = $1.31 (debit)
+7 
