Question

Two passengers on a cruise ship look out across the horizon. One of the passengers
who is standing on the upper deck can see a distance of 48 miles. The other
passenger who is standing on the lower deck can see a distance of 27 miles.
a. Write an expression to represent the difference between the two distances each
passenger can see. Then simplify the expression, keeping your answer in radical
form. Show all steps needed to write your answer in simplest form.