Question 10 1 pts You have recorded your company sales over the last 2 years and notice an increasing trend in sales. After plotting the sales in Excel, it shows you the following best-fit line: y-1036.7x+2729.5 where y is units sold and x is the time period. You also observe that the sales show seasonality and calculate the seasonal indices for each season in the table below. Seasonal Season Index Winter 0.82 Spring 0.78 Summer 1.26 1.13 Fall Using the trendline and seasonal index, what is the forecast for the next Summer (time period 11)? (slides 31-34 and Practice Problem #28) 14,133 O 13,097 17.142 O 12,060 O 10,215 17,808 15.170 9,889