The monthly sales at an import store are currently 5000 dollars but are expected to be declining at the rate of S' (t) = -542/3 = - dollars per month t months from now. The store is profitable as long as the sales level is above 2000 dollars per month. (a) Find a formula for the expected sales in t months. Sales = (b) What sales figure should be expected 2 years from now? Sales = (c) For how many months will the store remain profitable? Months =