the drama club charged x dollars for a student ticket and y dollars for an adult ticket for a play. The club sold 100 student's tickets and 250 adults tickets.

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

What ia the sum if the first 7 terms of the geometric series

Cole says the distance between points (-5,0) and (0,-5)is 5 units. is he correct? explain why or why not.