Jon's last paycheck was $342.58. If he worked 35.5 hours, how much does he get paid per hour?

I need the answer to this question how much does he get paid per hour?

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