WASHINGTON (AP) — Seventy-year-old Cassandra Gentry is looking forward to a hefty cost-of-living increase in her Social Security benefits — not for herself but to pay for haircuts for her two grandchildren and put food on the table. The three live in a Washington apartment building that houses 50 “grandfamilies” — where grandparents take care of children who do not have parents present. Gentry, who took in her grandkids to keep them in a safe environment, says the boost in benefits will help her make ends meet.