ACME Company's expected sales can be modeled by g(t) = 13 – 21? + 4t - 7, where g(t) is measured in thousands of dollars and t is the number of years after 2008. Find the average rate of change in expected sales from 2009 to
2015.

Select one:
O a. -$45,000
O b. $45,000
O c. $36,000
O d. $270,000