I belive it would be 12x + 12y
Answer:
substitute x=1/2 in the equation then it will be

Divide miles by 60 to convert it to miles per minute because there are 60 minutes in an hour.
Step-by-step explanation:
Let θ be the angle of depression i.e the angle between the horizontal and the observer's line of sight.
tanθ= (Height of the light house)/(Horizontal distance of ship from the base of light house)
∴tanθ=88/1532=0.0574
∴θ=tan−1(0.0574)=3.290(2dp)