Sales of Volkswagen's popular Beetle have grown steadily at auto dealerships in Nevada during the past 5 years (see table below). Year 1 2 3 4 5 Sales 450 510 520 563 595 a) Forecasted sales for your 6 using the trend projection (linear regression) method aro sales (round your response to one decimal place). b) The MAD for a linear regression forecast is sales fround your response to ono decimal place). c) The MSE for the linear regression forecast is sales (round your response to one decimal place)