I need help on part a, b, c, and d

The graph of f(x) is shown (see figure). 9x2 f ( X ) =_ x2 + 2 Not drawn to scale (a) Find the following limit. L = lim f(x) = X - 00 (b) Determine x, and x, in terms of E. X 2 (c) Determine M, where M > 0, such that If(x) - L| M. M = (d) Determine N, where /