can u help with these pls?

1. Use the definition of continuity and the properties of limits to show that the function is continuous at the given number a. f(x) = 3x4 - 5x + 3x2 + 4, a=2 f(x) = (x+ 2x3)4, a=-1 h(t ) = 2t - 3t2 1 + 13 ,a=1For the function f whose graph is given, state the following. (a) lim f(x) (b) lim f(x) x ->00 x -> -00 (c) lim f(x) (d) lim f(x) x-1 x-3 (e) The equations of the asymptotes Y3. Suppose f is continuous on [1, 5] and the only solutions of the equation f (x) = 6 are x = 1 and x = 4. If f(2) = 8, explain why f(3) > 6.4. Find the horizontal and vertical asymptotes of each curve. 1 + x4 x- - x4 a) b) 2x2 + x - 1 y x- +x - 2