DoorDash is teaming with discount chain Family Dollar to deliver household goods, groceries and other products. DoorDash, which focuses on food and grocery delivery, on Tuesday said the new partnership will let consumers use its app to shop at roughly 7,000 Family Dollar stores across the U.S. The announcement comes as Americans face an affordability crunch in the face of high housing, health and child care costs , as well as elevated grocery store prices.  Consumers can also shop at Family