Rory has a recipe for chocolate cupcakes. She uses 4 1\2 cups of flour to make 12 cupcakes. Camryn will follow the same recipe. She will make c cupcakes using f cups of flower. Which of these equations represents the relationship between c and f?

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