Help with this trig problem?

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

John has 1/2 pound of oranges to share with julie. if they share the oranges equally, how much will each of them have?

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?