Expression 8: 1.5 left parenthesis, "x" plus 12.3 , right parenthesis left brace, negative 6.2 4 less than "x" less than negative 4.0 6 , right brace Has graph. To audio trace, press ALT+T.1.5x+12.3−6.24<x<−4.06
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Expression 9: left parenthesis, "x" plus 2 , right parenthesis squared equals negative 30 left parenthesis, "y" minus 12.5 left brace, negative 4 less than "x" less than 11.5 , right brace , right parenthesis Has graph. To audio trace, press ALT+T.x+22=−30y−12.5−4<x<11.5
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Expression 10: 0.8 left parenthesis, "x" minus 9 , right parenthesis left brace, 25 greater than "x" greater than 13.9 , right brace Has graph. To audio trace, press ALT+T.0.8x−925>x>13.9
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Expression 11: negative 0.8 left parenthesis, "x" minus 9 , right parenthesis left brace, 25 greater than "x" greater than 13.9 , right brace Has graph. To audio trace, press ALT+T.−0.8x−925>x>13.9
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Expression 12: left parenthesis, "y" , right parenthesis squared equals 33 left parenthesis, "x" minus 20 , right parenthesis left brace, "x" less than 25 , right brace Has graph. To audio trace, press ALT+T.y2=33x−20x<25
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Expression 13: StartFraction, left parenthesis, "x" plus 17 , right parenthesis squared Over 0.5 , EndFraction plus StartFraction, left parenthesis, "y" , right parenthesis squared Over 0.5 , EndFraction equals 1 Has graph. To audio trace, press ALT+T.x+1720.5+y20.5=1
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Expression 14: StartFraction, left parenthesis, "x" plus 18.5 , right parenthesis squared Over 1.5 , EndFraction plus StartFraction, left parenthesis, "y" minus 6.5 , right parenthesis squared Over 1.5 , EndFraction equals 1 Has graph. To audio trace, press ALT+T.x+18.521.5+y−6.521.5=1
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Expression 15: StartFraction, left parenthesis, "x" plus 22 , right parenthesis squared Over 0.5 , EndFraction plus StartFraction, left parenthesis, "y" minus 10 , right parenthesis squared Over 0.5 , EndFraction equals 1 Has graph. To audio trace, press ALT+T.x+2220.5+y−1020.5=1