Tucker (age 52) and Elizabeth (age 48) are a married couple. Tucker is covered under a qualified retirement plan at his job and earned $90,000 in 2015. Elizabeth is employed as a lab technician and earned $30,000 but is not covered under a qualified retirement plan. They file a joint return; have interest and dividend income of$25,000. What is the maximum amount of tax deductible contributions may be made to a traditional IRA?