1.) Lorraine would like to purchase a new pair of boots that cost $80. She has a coupon for 25% off. The following proportion can be used to help her determine the new price:
a) What does the x represent?
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b) Why is the denominator of the first ratio 100?
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c) Solve the proportion:
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d) What is the new price of the boots after the discount?
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e) Explain why the following proportion could not be used to solve this problem:
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f) To find the final price in one step, you can use the following proportion:
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Where do you suppose the 75 comes from?
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g) Solve the proportion:
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