Based on data from the Central Provident Fund of a certain country (a government agency similar tot the Social Security Administration), the estimated cash in the fund in 2003 is given by:
A(t)= -96.6t^4 + 403.6t^3 + 660.9t^2+250
where A(t) is measured in billions of dollars and t is measured in decades, with t=0 corresponding to 2003. Find the interval where A is increasing and the interval where A is decreasing and interpret your results.
A(t)= -96.6t^4 + 403.6t^3 + 660.9t^2+250
where A(t) is measured in billions of dollars and t is measured in decades, with t=0 corresponding to 2003. Find the interval where A is increasing and the interval where A is decreasing and interpret your results.