Step-by-step explanation:

and we have 
so 

we have 
<em>Finally </em>
<em />
<em>I really hope this helps coz it took much time </em>
They y-axis represents the -3 now all that you need to do is line it up to -3 and 3 in the graph
Without using the trigonometry ratio, we can find the distance between the ship and the buoy by:
the distance between City and Lemont SUBTRACT the vertical distance between City and the point parallel to the Ship
The distance between the City and Lemont can be worked out using the Sin rule


≈98.3
The vertical distance between the City and the point parallel to the ship can be worked out using the Pythagoras theorem

≈36.8
The distance between the ship and the Buoy is given:

miles
What does the rest of the problem say?
It’s D, because the x-value, 8, has two y-values, the 5 and 9. In order to be a function, each x-value has to have only one y-value.