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3. From your scenario in Q2, provide a sketch of the original functions. Remember to supply the meaning and unit on each axis. 4. The instantaneous rate of change of Bob's Calculus mark over time (in days) is plotted above. a, b, care different days. Keep using a, b. and c in your answers. (a) [50 word limit] What is the significance of day b on Bob's mark? Explain. Answer: (b) [50 word limit] Out of a, b, and c, when is Bob's mark the lowest? Explain. Answer: (c) [50 word limit] Can we know whether Bob passed the course in the end? Explain