OLYMPIA, Wash. (AP) — The Washington Legislature has approved a bill that would expand a tax credit for low-income workers and families. The state tax exemption was created in 2008, but has never been funded. Democratic leaders in both the House and Senate have allocated money to the program in their recent budget proposals. Under current law, the amount of the state benefit is 10 percent of a person’s credit from the federal program or $50, whichever is greater. Following an amendment accepted on the Senate floor, the proposed changes to the law replaces that with a base amount ranging from $300 to $1,200, depending on the number of children a taxpayer has.