7. [-/3 Points] DETAILS In October 2005, a company employs 12000 people and its total monthly wage bill is 21 million dollars. What is the average monthly wage of the company's employees? . Average monthly wage : dollars. The company is growing at a rate of 20 employees per month. The total monthly wage bill is increasing at a rate of 560 thousand dollars per month. At what rate is the average monthly wage changing at this time? Give your answer correct to the nearest cent per month. . Rate of change: dollars per month. You should be careful over the units in this question. Hint: write the total monthly wage bill as the function f (t) and the number of employees as the function g (t). What is the average monthly wage in terms of the fu