(15 pts) A store finds that its sales decline after their ad campaign ends. The rate at which the daily sales decline is given as S'(t) = 225e -0.250 - 210, where t is the
number of days since the ads quit running. Suppose that their daily sales are 3700 units
at the time the campaign ends (t = 0). Find:
a. The function that describes the total daily sales, or S(t).
b. What the daily sales will be 7 days after the ads stop running.