A diver dives 17 2/3 yards and then comes back to the surface. Then, she dives 9 3/8 yards deeper than her first dive. What is her depth, in yards, in relation to the surface of the water?
(giving the points this website is allowed to give me)
To calculate her relation to the surface of the water you would have to add the first dive to the second one. It would be negative because she is below sea level.
