math

During a scuba drive, Lainey descended to a point 20 feet below the ocean surface. She continued her descent at a rate of 20 feet per minute. Write an inequality you could solve to find the number of minutes she can continue to descend if she does not want to reach a point more than 100 feet below the ocean surface.

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1. 20 + 20m <= 100

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2. how what do u mean

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3. -20 - 20n ≤ -100

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4. -20 - 20n ≥ -100

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5. -20 - 20n ≥ -100

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6. -20 - 20n ≥ -100

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7. -20 - 20n ≥ -100

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