Qusetion: U.S. CENSUS The number of Americans aged 45 to 54 is approximately
N(t) = -0.00233t4 + 0.00633t3 - 0.05417t2 + 1.3467t + 25
Million people in year t, with t = 0 corresponding to the beginning of 1990. Compute N'(10) and N"(10) and interpret your results.