document.write( "Question 750104: The cost of 2 bagels and 2 cans of juice is $4.40. The cost of 3 bagels and 4 cans of juice is $7.80
\n" ); document.write( "a. write a system f equations to represent this situation.
\n" ); document.write( "b. Solve the system of equations by substitution. Explain what the solution means.
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Algebra.Com's Answer #456352 by FrankM(1040)\"\" \"About 
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2B+2J=440
\n" ); document.write( "3B+4J=780\r
\n" ); document.write( "\n" ); document.write( "Double both sides of first equation;\r
\n" ); document.write( "\n" ); document.write( "4B+4J=880
\n" ); document.write( "3B+4J=780 (and subtract the second equation from the first here)\r
\n" ); document.write( "\n" ); document.write( "B=100 A bagel is $1.00\r
\n" ); document.write( "\n" ); document.write( "2(100)+2J=440
\n" ); document.write( "200+2J=440
\n" ); document.write( "2J=240
\n" ); document.write( "J=120 Juice is $1.20
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