A convenience store recently starred to cam a new brand of soft drink in its territory Management is interested in estimating future sales volume to determine whether it should continue to carry the new brand or replace it with another brand. At the end of April, the average monthly sales volume of the new soft drink was 700 cans and the trend was + 50 cans per month. The actual sales volume figures for May, June and July are 760, 900 and HZO, respectively. Use trend-adjusted exponential smoothing with α = 0.2 and 0.1 to forecast usage for June, July and August.