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OpenStudy (anonymous):
The zoom feature on a camera lens allows you dilate what appears on the display. When you change from 100% to 500%, the new image on your screen is an enlargement of the previous image with a scale factor of 5. if the new image is 47.5 mm wide, what was the width of the previous image
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OpenStudy (anonymous):
since 47.5 is 5 times larger, you divide 47.5 by 5 to get the original
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