$\backslash$table$[[$Month$,$Sales,Forecast$],[$January$,1000,1043],[$February$,3000,],[$March$,5000,],[$April$,4000,],[$May$,5000,],[$June$,6000,]]$

Compute the forecast for the month of July using simple exponential smoothing. Take alpha $=0\mathrm{.}2$

$4200$

$3011$

$3609$

$3400$