Expression 5: "y" equals negative .0 0 0 0 6 left parenthesis, "x" minus 707 , right parenthesis cubed plus 150 left brace, 560 less than or equal to "x" less than or equal to 640 , right bracey=−.00006x−7073+150560≤x≤640
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Expression 6: "y" equals negative .0 2 5 "x" plus 184 left brace, 640 less than or equal to "x" less than or equal to 1500 , right bracey=−.025x+184640≤x≤1500
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Expression 7: StartFraction, left parenthesis, 100 "x" minus 100000 , right parenthesis squared Over 500 , EndFraction plus StartFraction, left parenthesis, 50 "y" minus 16894 , right parenthesis squared Over 400 , EndFraction equals 200000100x−1000002500+50y−168942400=200000
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Expression 8: StartFraction, left parenthesis, 100 "x" minus 150000 , right parenthesis squared Over 500 , EndFraction plus StartFraction, left parenthesis, 50 "y" minus 16270 , right parenthesis squared Over 400 , EndFraction equals 200000100x−1500002500+50y−162702400=200000
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Expression 9: "y" equals negative .0 0 0 0 0 5 left parenthesis, "x" minus 1550 , right parenthesis cubed plus 146 left brace, 1500 less than or equal to "x" less than or equal to 1800 , right bracey=−.000005x−15503+1461500≤x≤1800
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Expression 10: "y" equals negative .0 0 0 0 0 5 left parenthesis, "x" minus 2038 , right parenthesis Superscript, 3 , Baseline left brace, 1800 less than or equal to "x" less than or equal to 2000 , right bracey=−.000005x−203831800≤x≤2000