Tough Face, a manufacturer of rock-climbing gear, has been enjoying steady growth of its very reliable and colorful carabiner products. Using the following sales history, calculate the trend-adjusted exponential smoothing forecast for the next three years. The growth trend appears to be 150 cases, alpha = 0.75, and beta = 0.85. Year 1 250 Year 2 369 Year 3 507 Year 4 658 Year 5 903

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