Compute a three$-$period moving average forecast given demand for shopping carts for the last five periods. $($Round all your answers to two decimal points.$)$

$\backslash$table$[[$Period$,$Demand$],[1,42],[2,40],[3,45],[4,39],[5,48]]$

$\backslash$table$[[$Forecast Period $4,],[$Forecast Period $5,],[$Forecast Period $6,]]$

If actual demand in period $6$ turns out to be $42,$ the moving average forecast for period $7$ would be

Forecast Period $7$