Find the reference angle given: t = -216º.

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2

Arectangle plot measure 20ft. by 30ft. a 3-ft.-wide sidewalk surrounds it.find the area of the sidewalk.

The hockey team has been great! in 2008, they won 20% more games than in 2007 in 2009 they won 50% more games than in 2008 what was their overall percentage increase from 2007 through2008?