Penelope has several coins, all nickles and quarters in her piggy bank. the total amount of money that she has is 15.65. if penelope has 13 more nickels than quarters how many quarters does she have?

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.

You work for a landscape company that just got a contract to re-mulch a park. the area that needs mulching is 30 feet by 60 feet. they want a 3 inch layer of much on the area. the company has bags of mulch that cover 2 cubic yards that cost $4.00 per bag. how much will it cost the consumer just in materials to re-mulch the area (round to the nearest dollar)?

Acar travels 85 kilometers per hour. what is the equivalent speed in meters per hour?