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 120 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.
well, you have the formula -- what's keeping you from using it?
d = √(3h/2)
so, since you have h, plug it in.
d = √(3*120/2) = √180 = √(36*5) = 6√5 miles
So now get out your calculator and finish this off.