be the following piecewise-defined function. \[f(x)=\left\{\begin{array}{II} x^{2}+3 & \text {for} x \leq 5 \\ 5x+3 & \text {for} x>5 \end{array} ight. \] (a) Is f continuous at X = 5 ? (b) Is f differentiable at x = = 5 ? (a) Is f(x) continuous at x = 5 2 Ves N