The equation that represents the total cost for ari to rent a bike for b hours and Meg to rent scooter for s hours will be 9b + 10s.
From the information given, the rental for bike is $9 per hour while the rentals for scotter is $10 per hour.
Therefore, the equation will be:
= (9 × b) + (10 × s)
= 9b + 10s
In conclusion, the expression is 9b + 10s.
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