Wilfrid's teacher gave him a graph to help him understand the speed at which a tooth on a saw blade travels. The graph shows the height of one tooth on the circular blade relative to the cutting surface relative to time. 2th(t) 0- d.oB 0.10 0.12 -2- -4- -8- -10- Time (s) (a) How high above the cutting surface is the blade set? (b) What is the period of the function, and what does it represent in this situation? (c) What is the amplitude of the function, and what does it represent in this situation? Height of cutting tooth (inches)

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