Someone smart plz help dont know what to do:(

Which point has an coordinates of (2,0) ? a

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?

Match the one-to-one functions with the graphs of their inverse functions.