$1.$ Using exponential smoothing with a weight $$on actual values: $($a$)$ if sales are $$45,000$ and $$50,000$ for $1998$ and $1999,$ what would you forecast for $2000?($The first forecast is equal to the actual value of the preceding year.$)($b$)$ Given this forecast and actual $2000$ sales of $$53,000,$ what would you then forecast for $2001?$