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: ____

The cost of admission into the park is $35.

For each ride, he will need to pay $3.

If Adrian goes on 12 rides, he will have to pay for the cost of admission plus the cost of the rides.
Cost of admission: $35
Cost of rides (12 rides * $3/ride): 12 * $3 = $<<12*3=36>>36

Total cost with 12 rides: $35 + $36 = $<<35+36=71>>71

If Adrian goes on r rides, he will need to pay for the cost of admission plus the cost of the rides.
Cost of admission: $35
Cost of rides (r rides * $3/ride): r * $3 = $3r

Total cost with r rides: $35 + $3r

how many cost with 12 rides and how many cost with r rides.

Sorry for the confusion.

The total cost for 12 rides would be the cost of admission plus the cost of rides.

Total cost with 12 rides: $35 + (12 rides * $3/ride) = $35 + $36 = $71

For r rides, the total cost would be the cost of admission plus the cost of rides.

Total cost with r rides: $35 + (r rides * $3/ride) = $35 + $3r

wrong

Apologies for the confusion.

If Adrian goes on 12 rides, the total cost would be the cost of admission plus the cost of the rides.

Cost of admission: $35
Cost of rides (12 rides * $3/ride): $36

Total cost with 12 rides: $35 + $36 = $71

If Adrian goes on r rides, the total cost would still be the cost of admission plus the cost of the rides.

Total cost with r rides: $35 + (r rides * $3/ride) = $35 + $3r