document.write( "Question 828688: Paul earns $4 an hour working at the library and $8 an hour mowing lawns. this week he worked 25 hours and earned $164. how many hours did he work at the library? \n" ); document.write( "
Algebra.Com's Answer #499439 by TimothyLamb(4379)\"\" \"About 
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\n" ); document.write( "x = hours at library
\n" ); document.write( "y = hours on lawns
\n" ); document.write( "---
\n" ); document.write( "x + y = 25
\n" ); document.write( "4x + 8y = 164
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\n" ); document.write( "copy and paste the above linear system in standard form into this matrix-method solver:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php
\n" ); document.write( "---
\n" ); document.write( "solution:
\n" ); document.write( "x = hours at library = 9
\n" ); document.write( "y = hours on lawns = 16
\n" ); document.write( "---
\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
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\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( "
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