The function f x 18 0 955 models the percentage of surface sunlight f x that reaches a depth of x feet beneath the surface of the ocean The figure shows the graph of this function Use the function to determine at what depth to the nearest foot there is 1 of surface sunlight How is this shown on the graph of f Intensity 2 20 40 60 80 Depth At what depth is there only 1 of surface sunlight feet Do not round until the final answer Then round to the nearest whole