From the table: a)Describe the words in a pattern
b) Write a rule to describe the pattern
c)If the table had an input of 7, would there be an output?
d)If the table had an output of 31, what would be the input?

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