Question: DISABILITY BENEFITS The number of persons aged 18-64 receiving disability benefits through Social Security, the Supplemental Security income, or both, from 1990 through 2000 is approximated by the function
N(t) = 0.00037t3 - 0.0242t2 + 0.52t + 5.3 (0 ≤ t ≤ 10)
Where f(t) is measured in units of a million and t is measured in years, with t = 0 corresponding to the beginning of 1990. Compute N(8), N'(8), and N"(8) and interpret your results.