Is this correct ? (prime factor q)

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The highest point on earth is the peak of mount everest if you climb to the top you would be approximately 29,035 feet above sea level at remembering that amount is 5280 feet percentage of the height of the mountain would you have to climb to reach a point 2 miles above sea level

Ineed i been stuck on this question since yesterday

Can someone me with the property questions for 12 13 and 14 plz