document.write( "Question 820963: Find a function that models the area a of a rectangle whose length is 9ft more than twice its width x \n" ); document.write( "
Algebra.Com's Answer #493803 by TimothyLamb(4379)\"\" \"About 
You can put this solution on YOUR website!
---
\n" ); document.write( "a(x) = x(2x + 9)
\n" ); document.write( "---
\n" ); document.write( "answer:
\n" ); document.write( "a(x) = 2x^2 + 9x
\n" ); document.write( "---
\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve quadratic equations, quadratic formula:
\n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php
\n" ); document.write( "
\n" );