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Write the sentence as an equation. z plus 372 is equal to 160

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

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose