Shari deposited $5,000 in a simple interest account that pays 3% interest annually. If she leaves the money in the account for 5 years, how much interest will she earn?

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?