Question 1194168
the distance d in miles to the horizon when looking out at the ocean is modeled by the function d=√1.5a, where a is the altitude in feet where you are standing. round your answer to the nearest whole mile. a. if you are standing at the altitude of 150 feet, at what distance can you see the horizon? b.id the distance to the horizon in 30 miles, at what altitude are you standing?
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d=√1.5a 
Using the radical symbol makes it unclear what is under the radical.
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If it's d = sqrt(1.5a):
a. if you are standing at the altitude of 150 feet, at what distance can you see the horizon?
Sub 150 for a and calculate.
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b.id the distance to the horizon in 30 miles, at what altitude are you standing?
30 = sqrt(1.5a)
Solve for a