Rate of bank failures the rate at which banks were failing

Question

Question: RATE OF BANK FAILURES The rate at which banks were failing between 1982 and 1994 is given by

f(T) = -0.063447t⁴ - 1.953283t³ + 14.632576t² - 6.684704t + 47.458874        (0 ≤ t ≤ 12)

where f(t) is measured in the number of banks/year and t is measured in years, with t = 0 corresponding to the beginning of 1982. Compute f (6) and interpret your results.