12. Put the following functions in order from slowest-growing to fastest-growing: 5n, 3n log n, n (3/2) n log n, (n/3 n, 10 log n, 7n - 5. Identify functions that have the same growth rate. 13. Suppose an initially empty stack S has performed a total of 25 push operations, 12 top operations, and 10 pop operations, 4 of which returned null to indicate an empty stack. V the current size of S? Justify your