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 r rides?
Cost with 12 rides: ______
Cost with r rides: _______
Cost with 12 rides: $35 + ($3 x 12) = $35 + $36 = $71
Cost with r rides: $35 + ($3 x r)