7, 2, 3, 9, 4, 6, 10
20. Mean = 21. Median = 22. Mode = 23. Range =

pls find out

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?