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OpenStudy (anonymous):
You have a family portrait that is 4 inches high by 6 inches wide. You want to enlarge the photo so that it is 30 inches wide with dimensions proportional to those of the original. The photo lab charges $.02 per square inch to print enlarged photos. What is the area in square inches of your enlarges photo? How much will it cost to buy three prints?
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OpenStudy (amistre64):
6*? = 30 4*? = new dimension? 30 * new dimension = how many square inches? multiply that by .02 to determine the price
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