(1 point) The manager of the Many Facets jewelry store models total sales by the function S(t) 250025 I 2+0.6t where t is the time (years) since the year 2009 and S is measured in thousands of dollars. (a) At what rate (in dollars per year) were sales changing in the year 2012? 346.2603878 (b) What happens to sales in the long run? Total sales trend toward 4166.66666666667 thousand dollars. v