The total cost for Ari to rent a bike for b hours and Meg to rent a scooter for s hours is represented by the expression 9b + 10s. Here option A is correct.
1: Identify the costs of renting a bike and scooter.
From the image, we see that the cost of renting a bike is $9 per hour and the cost of renting a scooter is $10 per hour.
2: Determine the total number of hours for which each item is rented.
The problem states that Ari rents a bike for b hours and Meg rents a scooter for s hours.
3: Calculate the total cost for renting the bike.
The total cost for renting the bike for b hours is simply the cost per hour multiplied by the number of hours rented: 9b
4: Calculate the total cost for renting the scooter.
Similarly, the total cost for renting the scooter for s hours is 10s
5: Add the costs of renting the bike and scooter to find the total cost.
The total cost for renting both the bike and scooter is the sum of the individual costs: 9b + 10s
Therefore, the expression that represents the total cost for Ari to rent a bike for b hours and Meg to rent a scooter for s hours is 9b + 10s. Here option A is correct.