Find the x-values at which f is not continuous. Which of the diso tinuities are removable? (Enter your answers from smallest to largest. Enter NONE In any unused answer blanks.) Need Help? Pass Hanks 20. [-/2 Points] DETAILS LARCALCETT 2.4.055. And the x-values (if any) at which f is not cont exist, enter ONE.) (x - In(x + 1), x20 7-X. V Need Help? Pass is 21. [-/3 Points] DETAILS LARCALCET7 2.4.058.EP. Consider the following function. (x) - tank Graph the function. Identify the discontinuities. Using k as an arbitrar Are these discontinuities remo Need Help? Pass it 22. [-/2 Points] DETAILS LARCALCET7 2.4.059. Find the x-values [if any) at which f is not continuous. Which of the discont an arbitrary integer. If an answer does not exist, enter ONE.) Mx) - [x - 9] Need Help? Bass it 23. [-/1 Points] DETAILS LARCALCET7 2.4.062. Find the constant a such that the function is continuous on the entire real line. x21