document.write( "Question 45205This question is from textbook College Algebra
\n" ); document.write( ": Find the maximum or minimum value of the function\r
\n" ); document.write( "\n" ); document.write( "f(x) = -x^2/3 + 2x + 7
\n" ); document.write( "x = 2/2(-1/3) = 2/(-2/3)= (2/1)(3/2)= 3 maximum\r
\n" ); document.write( "\n" ); document.write( "(-x^2 + 6x + 21 /3) = ((-x^2 + 6x + 9) + 21 + 9)/3)\r
\n" ); document.write( "\n" ); document.write( "= (-(x + 3)^2 + 30)/3\r
\n" ); document.write( "\n" ); document.write( "= -(x + 3)^2 + 10
\n" ); document.write( "y = 10\r
\n" ); document.write( "\n" ); document.write( "Thanks so much! \n" ); document.write( "

Algebra.Com's Answer #30016 by rapaljer(4671) $\"\"$ $\"About$

You can put this solution on YOUR website!
You are correct again! Do you happen to have a graphing calculator? Does anyone want to know how to check these with a calculator? Just draw the graph:
\n" ); document.write( " $\"graph+%28300%2C300%2C+-6%2C+10%2C+-6%2C+16%2C+-%28x%5E2%29%2F3%2B2x%2B7+%29+\"$ .\r
\n" ); document.write( "\n" ); document.write( "Does the vertex agree with your algebra result?? It does!\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "R^2 at SCC \n" ); document.write( "

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