How does one solve these notes questions? (work included)

Problems 14- 17, Given the function y = k(x) shown below, discuss whether Rolle's Theorem or the Mean Value Theorem can be applied on the stated intervals. Justify your reason. y= k(x) M 14. [5, 8] Mean Value Theorem 15. [0, 4] Rolle's Theorem 16. [3, 6] Mean Value Theorem 17. [4, 8] Rolle's Theorem