Angle psr measures 99°. what is the measure of psq in degrees?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

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)?

(25 ! ) what does it mean for an equation to have no solution or infinitely many solutions?