MAth 109

The formula d= square root of 3h/2 models the distance, d, in miles, that a person h feet high can see to the horizon. If the pool deck on a cruise ship is 80' above the water, how far can passengers on the pool deck see?
Write the answer in simplified radical form. Then use the simplified radical form and a calculator to express the answer to the nearest tenth of a mile.
Absolutely don't know where to begin.
I thought maybe 1 and the square root of 3/2h or square root of 3.2.2.2.5 but it did not work in the calculator

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  1. I assume your formula is

    d = √(3h/2)

    If the person is 80' above the water, just plug it in:

    d = √(3*80/2) = √120 = 2√30 = 10.95
    So, the person on the deck can see 10.95 miles.

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  2. -3√x+2 = x-16

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