The concentration of a certain chemical in a full water tank depends on the depth of the water. At a depth that is x feet below the top of the tank, the concentration is $$3+\frac{4}{\sqrt{5-x}}$$
parts per million, where 0 < x < 4. To the nearest 0.1 foot, at what depth is the concentration equal to 6 parts per million?
(A) 2.4 ft
(B) 2.5 ft
(C) 2.8 ft
(D) 3.0 ft
(E) 3.2 ft
The OA is E.
Experts, to solve this PS question, I just need to isolate the x and get it value, right?
I appreciate if any expert explains it to me. Thank you so much.
parts per million, where 0 < x < 4. To the nearest 0.1 foot, at what depth is the concentration equal to 6 parts per million?
(A) 2.4 ft
(B) 2.5 ft
(C) 2.8 ft
(D) 3.0 ft
(E) 3.2 ft
The OA is E.
Experts, to solve this PS question, I just need to isolate the x and get it value, right?
I appreciate if any expert explains it to me. Thank you so much.
