The volume of a box with height x, length x-1, and width 2x+2 is given by the binomial 2x^3-2x. what is the volume of the box if it’s height is 4 feet?

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b