Thanks to Lynda for the tip. The Jefferson Square storefront vacated by AAA a year and a half ago (4734 42nd SW) has a new tenant – signage says math-tutoring center Mathnasium is “coming soon.” The chain was founded in Southern California more than 15 years ago, according to its website, which says there are more than 900 franchisee- and company-owned centers in the U.S. and several other countries.