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She is first at 80 ft below the water. She rises at a rate of 2 ft/s. That means, she depth she attains each second, is being decreased by 2. After 1 second, she's at 78 ft After 2 seconds, at 76 ft, etc. So, you are removing depth from the initial 80 ft. Look for an equation where you have 80 ft minus something, and you're done! Post the answer you obtained. :) |
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