Tiffany sells musical instruments and equipment at Let It Rock in the mall. She earns a commission of 5% on the first $6,000, 7.5% on the next $6,000, and 10% on sales over $12,000. Her total sales for the month are $14,640. What is Tiffany’s total commission?

What is the distance between (–2 1/2,-3) and (1, –3)?

Elena and her husband marc both drive to work. elena's car has a current mileage (total distance driven) of 15,000 and she drives 23,000 miles more each year. marc's car has a current mileage of 46,000 and he drives 9,000 miles more each year. will the mileages for the two cars ever be equal? explain.

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?