Rescue helicopters
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This task is about finding and comparing the different costs.
![](/sites/default/files/resources/maths/algebra/7000/al7003/1.jpg)
Grabbem Helicopters Ltd. charges a fixed cost of $600 just to get its rescue helicopter in the air, and then an additional cost of $300 for every hour.
a)
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Show how to work out the total cost of a search lasting 4 hours.
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b)
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Show how to work out how long a search would be maintained for a sum of $2 700.
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c)
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Another helicopter company, Snatchem and Co. sets up, charging no fixed start-up fee, but simply $400 per hour of in-air time.
Show how to work out which company would give the longer search for a sum of $3 600.
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