37. . Mark's employer offers a pension plan that calculates the annual pension as the product of the final salary, the number of years of service, and a 3% multiplier. His employer uses a graded 6- year vesting formula as shown below. After 4 years, Mark leaves his job with a $45,000 salary. How much pension will he receive? Years Employed Vesting Percentage 0% 0% 20% 40% 4 60% 5 80% 100% 0 1 2 3 6