(b) Estimate AF between January 1 and January 6, 2015. Explain what this tells us about Arctic Sea ice. 46. The depth, h (in mm), of the water runoff down a slope during a steady rain is a function of the distance, x (in meters), from the top of the slope, so h = f(x). We have f'(15) = 0.02. %3D %3D (a) What are the units of the 15? (b) What are the units of the 0.02? dex/archives.html. Accessed March 2015. "ALISS SIN (c) About how much difference in runoff depth is there between two points around 15 meters down the slope if one of them is 4 meters farther from the top of the slope than the other? Chapter 2 KEY CONCEPT: THE DERIVATIVE 114 ST.1818 RB 56