A sales person earns commotion on the sales that she make each month The sales person earns a 5% commotion on the first $5000 she has in sales The sales person earns 7.5% commotion on the amount of her sales that are greater than $5000 This month the sales person had $8000 in sales. What amount of commission, in dollars, did she earn? Part B sale person earns $1375 in commission last month how much money in dollars does she have in sales last month