(A) Amy Reed is a furniture salesperson. She earns a graduated commission on sale as shown. Her sales for one week totaled $10,530. What was her total commission?

(B) Cody Thomas works as a hotel manager. He earns $7.80 per hour for a 40-hour week. His overtime rate is 1 1/2 times his regular hourly rate. This week, he worked 40 hours plus 8 1/2 hours overtime. What is his total pay?

(c) Herman sells encyclopedias for a publishing company. He is paid a commission of 20% of the first $1,500 and 15% of anything over $1,500. Last month he sold $2,230 worth of encyclopedias. How much commission did he earn last month?