Forecast Sales Volume and Sales Budget For $20$Y$8,$ Raphael Frame Company prepared the sales budget that follows. At the end of December $20$ Y$8,$ the following unit sales data were reported for the year:$1.$ Compute the increase or decrease of actual unit sales for the year ended December $31,20$Y$8,$ over budge$3.$ Prepare a sales budget for the year ending December $31,20$ Y $9.$