A sales associate earns a commission of 8% on her first $10,000 in sales revenue in a given week and a commission of 10% on any additional sales revenue that the associate generates that week. How much sales revenue did the associate generate last week?
(1) The sales associate earned a total of $1,500 in commission last week.
(2) Last week, the sales associate was eligible for the 10% commission rate on $7,000 of additional sales.