Algebra: Evaluate for the given value of the variable. 1) 7/8 x C for C=8. 2) T x 3/4 for T=8/9. 3) 1/2 x S for S=3/10. 4) Y x 6 for Y=2/3. (Will report stupid answers and will give decent points)

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?