Question 3

(a) $1,104 million. (Note that the limits of integration are 0 and 11, since we are calculating total sales through the end of 1997.)

(b) S'(6) = 2.52. The means that sales of Humatrope were growing at a rate of $2.52 million per year at the start of 1993.

06S(t) dt = 304.5. This means that total sales of Humatrope from January, 1987 to January, 1993 were $304.5 million..