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9. Temperature readings T (in C) were recorded every three hours midnight until 6 PM. The time I was measured in hours from midnight. 0 3 6 9 12 24 26 28 30 32 T T 15 30 18 28 (a) Use the data to sketch a rough graph of T as a function of t. (b) Assuming that the peak temperature was recorded during 12 noon, do you think is the temperature by 9 PM?​