8. Evaluate each limit, if it exists. a) lim(2x2 + 4x -5) b) lim 2x2 - 5 X+-3 x- 1 c) lim 5 x-1 (3x + 4) d) lim x2 - 4x + 3 x-+2 x-1 9. A function y = f(x) exists such that lim f(x) = 3, lim f(x) = m, and f(1) = n. Determine the values of m and n that make each statement true. a) lim f(x) = 3, but y = f(x) is x-+1 discontinuous at x = 1. b) y = f(x) is continuous at x = 1. c) lim f(x) does not exist. * +1 d) lim f(x) does not exist, but the x-+1 right-hand limit and the value of the function are equal