Expression 15: "y" equals negative 0.6 left parenthesis, "x" minus 83 , right parenthesis squared plus 35 left brace, "x" less than 89.3 , right brace left brace, "x" greater than 78 , right brace Has graph. To audio trace, press ALT+T.y=−0.6x−832+35x<89.3x>78
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Expression 16: "y" equals negative 0.6 left parenthesis, "x" minus 60 , right parenthesis squared plus 35 left brace, "x" less than 64.7 , right brace left brace, "x" greater than 54.4 , right brace Has graph. To audio trace, press ALT+T.y=−0.6x−602+35x<64.7x>54.4
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Expression 17: left parenthesis, "x" minus 60 , right parenthesis squared plus left parenthesis, 1.2 "y" minus 5 , right parenthesis squared less than or equal to 30 Has graph. To audio trace, press ALT+T.x−602+1.2y−52≤30
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Expression 18: left parenthesis, "x" minus 80 , right parenthesis squared plus left parenthesis, 1.2 "y" minus 5 , right parenthesis squared less than or equal to 30 Has graph. To audio trace, press ALT+T.x−802+1.2y−52≤30
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Expression 19: left parenthesis, 2 "x" minus 160 , right parenthesis squared plus left parenthesis, "y" minus 5 , right parenthesis squared less than or equal to 5 Has graph. To audio trace, press ALT+T.2x−1602+y−52≤5
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Expression 20: left parenthesis, 2 "x" minus 120 , right parenthesis squared plus left parenthesis, "y" minus 5 , right parenthesis squared less than or equal to 5 Has graph. To audio trace, press ALT+T.2x−1202+y−52≤5
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Expression 21: left parenthesis, "x" minus 70 , right parenthesis squared plus left parenthesis, 1.9 "y" plus 8 , right parenthesis squared less than or equal to 7 Has graph. To audio trace, press ALT+T.x−702+1.9y+82≤7
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Expression 22: "y" equals 1.5 left parenthesis, "x" minus 68.2 , right parenthesis squared minus 10 left brace, "x" greater than 67 , right brace left brace, "y" less than negative 5.6 , right brace Has graph. To audio trace, press ALT+T.y=1.5x−68.22−10x>67y<−5.6
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Expression 23: "y" equals 1.5 left parenthesis, "x" minus 71.9 , right parenthesis squared minus 10 left brace, "x" less than 73.2 , right brace left brace, "y" less than negative 5.6 , right brace Has graph. To audio trace, press ALT+T.y=1.5x−71.92−10x<73.2y<−5.6