3. Determine if the function f(x) is continuous at x = 4. Explain your choice in complete sentences using the definition of continuity. - 16 f ( x ) = if x # 4 x - 4 if x = 4 4. Sketch a possible graph of a function, together with vertical asymptotes, satisfying all the following conditions. Label the scale of your graph. lim_g (x) = 1, x -+-2 lim g(x) = -4, limg(x) = co, lim g(x) = 2, 5. Find the limit. Show your work. Do not evaluate by plugging in numbers. 3x2 - x+6) lim V4x4 + 1