Question: SALES PROMOTION The Lady Bug, a women's clothing chain store, found that t days after the end of a sales promotion the volume of sales was given by
S(t) = 20,000(1 + e-0.5t) (0 ≤ t ≤ 5)
Dollars.
a. Find the rate of change of The Lady Bug's sales volume when t = 1, t = 2, t = 3, and t = 4.
b. After how many days will the sales volume drop below $27,400?