Dedham residents Jack and Eric Linari, now 12 and 9, have been entrepreneurs for years. The brothers started Jack and Eric’s Pirate Lemonade Stand six years ago with the help of “first mates” (and parents) Scott and Monica Linari, and each year they donate all profits to charity. They came before selectmen on April 25 to get approval for a transient vendor’s license, which selectmen granted unanimously. This year, profits from the business will go to Dedham’s Toys for Tots collection. Over the life of their business, it has raised about $6,000, according to Scott Linari. Jack and Eric will be selling lemonade at the Dedham Farmers Market on Wednesdays during the summer.