Problems refer to the following: Revenues from sweater sales in a sportswear chain are given approximately by
where R(t) is the revenue (in thousands of dollars) for a month of sales t months after January 1
(A) Find the total revenues taken in over the 2-year period.
(B) Find the total revenues taken in from t = 0 to t =9.
(C) Illustrate part (B) graphically with an appropriate shaded region representing the total revenue taken in.