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 partc, enter your answers as a whole number a. By what percentage did total compensation (wages plus benefits) change at this plant from 2010 to 2020? Total compensation (Click to select) by What was the approximate average annual percentage change in total compensation? % b By what percentage did wages change at this plant from 2010 to 2020? Wages (Click to select) by%