Is 4(y-30)=4y+12 how many solutions

Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?

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

Which best describes a central bank's primary goals? limiting inflation and reducing unemployment reducing unemployment and maintaining cash flow controlling stagflation and reducing unemployment managing credit and ensuring the money supply's liquidity