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Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost

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

10x − 5y + 14 = 0 whats the answer pls