Qusetion: Outsourcing the amount (in billions of dollars) spent by the top 15 u.s. Financial institutions on it (information technology) offshore outsourcing is projected to be
A(t) = 0.92(t + 1)0.61 (0 ≤ t ≤ 4)
Where t is measured in years, with t = 0 corresponding to the beginning of 2004 .
A. Show that a is increasing on (0, 4) and interpret your result.
B. Show that a is concave downward on (0, 4). Interpret your result.