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Algebra / Linear inequalities in one or two variables Difficulty: Easy

Maria plans to rent a boat. The boat rental costs $60 per hour, and she will also have to pay for a water safety course that costs $10. Maria wants to spend no more than $280 for the rental and the course. If the boat rental is available only for a whole number of hours, what is the maximum number of hours for which Maria can rent the boat?

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Explanation

The correct answer is 4. The equation $60 h plus 10, is less than or equal to 280$ , where h is the number of hours the boat has been rented, can be written to represent the situation. Subtracting 10 from both sides and then dividing by 60 yields $h is less than or equal to 4 point 5$ . Since the boat can be rented only for whole numbers of hours, the maximum number of hours for which Maria can rent the boat is 4.