The weight of an adult blue whale is 9x10^4 kilograms the weight of an elephant is 3x10^3 kilograms. how many times have you ever is the world and the elephant?

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?