Question

The distance (in miles) that a person can see to the horizon can be approximated by

d(n) = V1.49n, where n is the elevation (in feet above sea level) of the person.
Approximate the elevation of a person who can see 85 miles to the horizon.

Answer 1

Explanation:

the function is

d(n) = sqrt(1.49×n)

so,

85 = sqrt(1.49×n)

85² = 1.49×n

n = 85²/1.49 = 7225/1.49 = 4,848.993289... ft

≈ 4,849 ft