Liz works at food for thought magazine. her employer offers her a pension. liz's
employer uses a formula to calculate the pension. retiring employees receive 2.1%
of their average salary over the last four years of employment for every year worked.
liz is planning on retiring at the end of this year after 20 years of employment. her
salaries for the last four years are $66,000; $66,000; $73,000; and $75,000. calculate
liz's annual pension.