C. In order to reduce the burden of the time spent on taxes, the IRS created the Office of Taxpayer Burden Reduction in early 2002. In its first five years, it shaved a total of about 200 million hours from tax paperwork. It would make sense that the office’s first year in existence may have led to the most improvement. Let’s assume that in its first year, it shaved 80 million hours, but the remainder of the 200 million hours was spread equally over the next four years and will continue at this same rate into the future. How many total hours would we have expected to be shaved by the end of its eighth year in existence? If y represents the total number of shaved hours and x is the total number of years the office has been in existence, what equation in the form y = mx + b represents this situation for for x ≥ 1?