Question: The losses (in millions of dollars) due to bad loans extended chiefly in agriculture, real estate, shipping, and energy by the Franklin Bank are estimated to be
A = f(t) = -t2 + 10t + 30 (0 ≤ t ≤ 10)
where t is the time in years (t = 0 corresponds to the beginning of 2002). How fast were the losses mounting at the beginning of 2005? At the beginning of 2007? At the beginning of 2009?