Aday at camp there were 56 girls and 42 boys the campers need to be split into equal groups each has either all girls are all boys what is the greatest number of campers each can 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?