The difference of x and y is 14. The value of x is 3 more than twice the value of y. Write two equations and graph to find the value of x.
A) x = 25
B) x = 4
C) x = 11
D) x = -17

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