miss Jackson spends about 1800 minutes teaching each week she teaches for five days in a week each of her for classes get the same amount of time how much time does Miss Johnson's been teaching each class

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?