Please explain this microeconomics tysm.

Firms compensate workers with "benefits" in addition to wages and salaries. The most prominent benefit offered by many firms is health insurance. Suppose that in 2010, workers at one steel plant were paid $20 per hour and in addition received health benefits at the rate of $4 per hour. Also suppose that by 2020 workers at that plant were paid $21 per hour but received $9 in health insurance benefits. Instructions: In parts a and b, enter your answers rounded to 1 decimal place. In part c, enter your answers as a whole number. pints a. By what percentage did total compensation (wages plus benefits) change at this plant from 2010 to 2020? Total compensation (Click to select) by Book What was the approximate average annual percentage change in total compensation? References b. By what percentage did wages change at this plant from 2010 to 2020? Wages (Click to select) ~]by What was the approximate average annual percentage change in wages? c. If workers value a dollar of health benefits as much as they value a dollar of wages, by what total percentage will they feel that their incomes have risen over this time period? What if they consider only wags when calculating their incomes? Incomes (Click to select) ]by d. Is it possible for workers to feel as though their wages are stagnating even if total compensation is rising? (Click to select)