Goodyear Tire and Rubber Company is the ninth largest tire manufacturer in the world. Here are the sales revenues for year 1 through year 5:

Year	Revenue (millions)
1	$3,889.9
2	4,066.4
3	4,535.6
4	4,731.8
5	4,498.7

a.When might a manager prefer linear trend technique to simple moving average technique? Explain your answer.

b. Based on MAD for from year 3 to year 5, which method (linear-trend or double exponential smoothing method with a = 0.4 and b = 0.2 (start with initial estimates S₁ = $4,867.90 and T₁ = $201.5 for the year 1)) provides the better forecasts? Explain. Forecast the sales revenue for year 6 and year 7 based on your preferred method