Expression 2: 14 / 15 times "x" squared plus left parenthesis, 5 plus 11 / 15 ) "x" plus 2.8 , right parenthesis Has graph. To audio trace, press ALT+T.14/15·x2+5+11/15)x+2.8
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Expression 3: negative 0.8 "x" minus 2.8 Has graph. To audio trace, press ALT+T.−0.8x−2.8