What function does this graph represent A. F(x) = -0.2(x-2)^2 + 1
B. F (x) = 0.2(x-2)^2 + 1
C. F(x) = -0.2(x-2)^2 - 1
D. F(x) = 0.2(x-2)^2 -1

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