document.write( "Question 815359: Mr. Nguyen is cooking hot dogs and hamburgers to sell at a football game. He expects to sell a combined total of 60 hot dogs and hamburgers, and that twice as many hot dogs will be purchased.\r
\n" ); document.write( "\n" ); document.write( "Write and solve a system of equations to determine the number of hot dogs and number of hamburgers that Mr. Nguyen should cook. \n" ); document.write( "
Algebra.Com's Answer #490934 by TimothyLamb(4379)\"\" \"About 
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d + h = 60
\n" ); document.write( "d = 2h
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\n" ); document.write( "d + h = 60
\n" ); document.write( "2h + h = 60
\n" ); document.write( "3h = 60
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\n" ); document.write( "h = 20
\n" ); document.write( "d = 40
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\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
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\n" ); document.write( "Convert fractions, decimals, and percents:
\n" ); document.write( "https://sooeet.com/math/fraction-decimal-percent.php
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\n" ); document.write( "Calculate and graph the linear regression of any data set:
\n" ); document.write( "https://sooeet.com/math/linear-regression.php \n" ); document.write( "
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