Find a formula for the nth term in this arithmetic sequence
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please help, thank you

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

What is a possible solutions of the x> 3?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?