If they bake only cakes, in a single day george can bake 10 cakes and greta can bake 5 cakes. if they make only pies, in a single day george can bake 10 pies whereas greta can bake 4 pies. therefore:

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?