Expression 2: 2 "x" minus 11 left brace, 5 less than or equal to "x" less than or equal to 8.5 , right brace Has graph. To audio trace, press ALT+T.2x−115≤x≤8.5
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Expression 3: negative 0.4 "x" plus 9.4 left brace, 8.5 less than or equal to "x" less than or equal to 14 , right brace Has graph. To audio trace, press ALT+T.−0.4x+9.48.5≤x≤14