You have a 92% homework average after the first 9 assignments. you figure you’re doing pretty well, so you skip the next assignment. how will your homework average change after the 0? (assume all the assignments are worth the same number of points)

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236