Maria Valquez is a public school teacher. Her employer provi…

Maria Valquez is a public school teacher. Her employer provides a tax deferred annuity (TDA). She began working for this employer 4 years ago and started her TDA at that time. Over those 4 years, she has contributed $1,000, $2,500, $3,000, $3,000 to her TDA through salary reduction. Her employer matches $1 for $1 up to $100 and offers graded vesting at the rate required by law for TDA accounts. Currently, Maria’s vested interest in the plan is