Question 9fa6b9f8

A submersible device is used for ocean research. The function $g\left(x\right)=-\frac{1}{55}\left(x+19\right)\left(x-35\right)$ gives the depth below the surface of the ocean, in meters, of the submersible device $x$ minutes after collecting a sample, where $x>0$. How many minutes after collecting the sample did it take for the submersible device to reach the surface of the ocean?