500 students were asked their favorite sport to watch on tv. 35% of the students like watching basketball, 15% of the students like watching baseball, 30% of the students like watching soccer, and the rest of the students like watching football. how many students like watching football?

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?