2-72. Express the given series using sigma notation, then evaluate the sums with your program
or by hand,
a.
4 + 8 + 12 + 16 + 20

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)?