Which product will result in a sum or difference of cubes? a (x + 7)(x2 – 7x + 14) b (x + 8)(x2 + 8x + 64) c (x – 9)(x2 + 9x + 81) d (x – 10)(x2 – 10x + 100)

Which of the following system of equation is not equal to the system of equations is not equal to the system of equations shown below

Due to financial difficulties the owner of 4 skateboard stores is going to close 2 of his stores. based on the money earned at each store, which two stores should remain open?

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