Adrian is going to an amusement park. The price of admission into the park is $35, and once he is inside the park, he will have to pay $3 for every ride he rides on. How much money would Adrian have to pay in total if he goes on 12 rides? How much would he have to pay if he goes on rr rides?
If Adrian goes on 12 rides, he would have to pay $3 x 12 = $<<3*12=36>>36.
The total amount of money Adrian would have to pay if he goes on 12 rides is $36 + $35 = $<<36+35=71>>71.
If Adrian goes on rr rides, he would have to pay $3 x rr + $35. Answer: \boxed{71+3r}.