Whenever postage rates change, some newspaper publishes a graph such as the one shown on the right, which shows the price of a Price of a First-Class Stamp first-class stamp from 2006 to 2016. 0.85- (a) Let f be the function whose rule is f(x) = cost of a first-class stamp in year x. Find f(2007) and f(2012). 0.71- (b) Explain why the graph in the figure is not the graph of the function f. What must be done to the figure to make it an accurate graph 0.57- Cost ( dollars) of the function f? 0.43- 0.29 0- 2006 2008 2010 2012 2014 2016 Year O A. f(2007) = $ (Type an integer or a decimal.) O B. The value of f(2007) cannot be determined from the graph. Select the correct choice below and fill in any answer box in your choice