Find the x-value at which f is discontinuous and determine whether f is continuous Trol 3 + x 2 if x s 0 f ( x ) = 15 - x if 0 5 a) Find the x-value at which fis discontinuous . X b) Determine whether f is continuous from the right, or from the left, or neither. O continuous from the right O continuous from the left neither c) Sketch the graph of f. (Select the correct graph.) f(x ) f (x)