What is the solution of the system of equations? {13x−6y=23x−4y=−10 enter your answer in the boxes. ( , )?

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?