Average daily high temperatures in Ottawa, the capital of Canada, range from a low of -5° Celsius on January 1 to a high of 27° Celsius on July 1, six months later. See the figure below. Find a formula for H, the average daily high temperature in Ottawa, in °C, as a function of t, the number of months since January 1. H (°C) 10 + t (months) 3 6. 9. 12 -10 + NOTE: Enter the exact answer. H(t): 20

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