The expression that represents total cost is $10 + $2r
The total cost is the total amount expended at the carnival.
The total cost for one admission is the sum of the cost for an admission and total rides.
Total cost = admission cost + total rides
Admission cost = $10
Total rides = $2 x total number of rides
=$2r
Total cost = $10 + $2r
To learn more, please check: https://brainly.com/question/10618432?referrer=searchResults
