Determine the value of a and b for wich the system
3x-2y+z=b
5x-8y+9 posses
2x+y+az=-1

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number

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

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]