Mags got a scale model of a jet plane from an online auction. she looked up the real length and found it to be 65 feet. if the model's scale is a 1 foot to 5 feet, how long will the model be?

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?