Final answer:
Martina can rent the boat for at most 3 hours with her $30 budget after applying a $5 discount coupon to the hourly rate of $7.
Step-by-step explanation:
Calculating the Boat Rental Time:
Martina wants to rent a boat and spend at most $30. The boat cost is $7 per hour, and Martina has a discount coupon for $5 off. To determine the possible number of hours she could rent the boat, we need to calculate the total cost and then the time based on her budget.
First, we apply the discount coupon:
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- Maximum amount Martina wants to spend: $30
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- Discount with coupon: $5
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- Adjusted maximum spending after discount: $30 - $5 = $25
Next, we determine the number of hours she can afford:
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- Boat rental cost per hour: $7/hour
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- Maximum hours Martina can rent the boat: $25 ÷ $7/hour ≈ 3.57 hours
Since Martina cannot rent the boat for a fraction of an hour, the possible number of hours she could rent the boat is 3 hours.