Okun's law gives the (empirically observed) correspondence betvieen a change in the unemployment rate and a change in the gross domestic product. Let g be the percentage change in the gross domestic product over a year, and let u be the change, in percentage points, of the unemployment rate over that year. One form of Okun's law states that 9- 3 - 2u. For example, if the unemployment rate is unchanged over a year, then u = 0 and g = 3- 2 x o= 3, so the gross domestic product changes by 3%. (a) Suppose that in a year, the unemployment rate rises from 4% to 7% (s0 u = 3 percentage points). According to Okun's lavw, vwhat is the percentage change in the gross domestic product? % (b) From 2013 to 2014, the unemployment rate fell from 7.4% to 6.2%. What does Okun's law give for the percentage change in the gross domestic product? (Note: In this case, u is a negative number.) (c) According to Okun's law, what change in the unemployment rate vould correspond to having no change in the gross domestic product?