Multiple Choice

A technician is following a standard operating procedure that uses the expression $7x - 4todetermineamachinessafetythreshold,whereto determine a machine's safety threshold, wherexrepresentstheusagefrequencylevel.Accordingtotheprocedure,whatisthefirststepinevaluatingthisexpressionforafrequencylevelof1( represents the usage frequency level. According to the procedure, what is the first step in evaluating this expression for a frequency level of 1 (x = 1$)?

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Updated 2026-04-20

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