DETAILS SCALCET9 2.5.021. Explain why the function is discontinuous at the given number a. (Select all that apply.) f(x) = { x+4 if x < -1, 2^x if x > -1, a = -1 f(-1) is undefined. f(-1) and lim x→-1 f(x) are finite, but are not equal. lim x→-1 f(x) does not exist. lim x→-1+ f(x) and lim x→-1- f(x) are finite, but are not equal. none of the above Sketch the graph of the function. DETAILS SCALCET9 2.5.022. Explain why the function is discontinuous at the given number a. (Select all that apply.) f(x) = { (x^2-2x)/(x^2-4) if x ≠ 2, 1 if x = 2, a = 2 f(2) is undefined. lim x→2+ f(x) and lim x→2- f(x) are finite, but are not equal. lim x→2 f(x) does not exist. f(2) is defined and lim x→2 f(x) is finite, but they are not equal. none of the above Sketch the graph of the function.