The bottled water industry is currently worth over $200 billion annually. The average cost of a bottle of water in the United States is 50 cents.
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Question 1
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Determine the equation that represents the cost (y) of buying x bottles of water.
What does the gradient represent in this equation?
Question 2
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Plot the graph of the linear equation you found in the above question.
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Question 3
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What is the total cost of buying one bottle of water a day for a year (not a leap year)?
Question 4
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A high-quality, re llable water bottle costs approximately $40. How many bottles of water would you have to drink in order for this option to be more cost e ective?
Question 5
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What other factors, apart from cost, might in ence someone’s decision whether to carry their own water bottle or to buy bottles of water?