9. Let f be the piecewise function defined at the right. Which of the following statements is false? A. f is continuous at x = 1 x2 + 2x for 3 10. Let f be the function defined byx) = +2 for $ 3, If f is continuous at x = 3, what is the value of k? A. -7 B. 2 C. 3 D. 7 E. There is no such value of k Find all the values of a, b, c, or k that make the function continuous everywhere. (cx2 x 11. f (x) = _Skx2 x 53 1 (4x - 11 = 1 x > 3 12. f(x) = 4 -x3 + kx x > 1 TC x 1