A company introduces a new product for which the number of units sold S is given by the equation below, where t is the time in months. 110(5 - 6t) S(t) 110(5 - (a) Find the average rate of change of S(t) during the first year. 123.75 (b) During what month of the first year does S'(t) equal the average rate of change? -Select--- ✓

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