The function Because of medical technology advances, the disability rates for people over 65 years old have been dropping rather dramatically. R(t) = 26.4e-0.016t (0 s t s 18) gives the disability rate R(t), in percent, for people over age 65 from 1982 (t = 0) through 2000, where t is measured in years. (a) What was the disability rate in 1982? In 1986? In 1994? In 2000? (Round your answers to one decimal place.) 1982 % 1986 % 1994 % 2000 % (b) Sketch the graph of R. R R 30 30 25 25 20 20 15- 15 10 10 5 O 5 - t 10 15 20 5 10 15 20 30 30 25 25 20 20 151 15 10 10 5 O 5 - t 10 15 20 5 10 15 20