2. A certain shade of pink is created by adding 3 cups of red paint to 7 cups of white paint. a. How many cups of red paint shold be added to 1 cup of white paint?

b. What is the constant of proportionality?

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *