document.write( "Question 1159831: Rita makes and sells necklaces. The materials to make each necklace cost $2.75. Last week she made 8 necklaces and wants to make a total profit of $78. Using the equation 8 (x + 2.75) = 78, Rita determined that she needs to sell each necklace for $7 to make a total profit of $78. Which error did Rita make? \n" ); document.write( "

Algebra.Com's Answer #782922 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( " $\"8+%28x+%2B+2.75%29+=+78\"$ ->Rita made error in the equation\r
\n" ); document.write( "\n" ); document.write( "if the number of necklaces is $\"x\"$ , and the materials to make each necklace cost is $ $\"2.75\"$ , Rita needed to subtract cost because she wants total profit of $ $\"78\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"8+%28x+-+2.75%29+=+78\"$
\n" ); document.write( " $\"+x+-+2.75+=+78%2F8\"$
\n" ); document.write( " $\"+x+-+2.75+=+9.75\"$
\n" ); document.write( " $\"+x+=+9.75%2B2.75+\"$
\n" ); document.write( " $\"+x+=+12.5+\"$ -> she needs to sell each necklace for $ $\"12.5+\"$ to make a total profit of $ $\"78\"$ \r
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\n" ); document.write( "\n" ); document.write( "check:\r
\n" ); document.write( "\n" ); document.write( "she made $\"8\"$ necklaces
\n" ); document.write( "each necklace cost $ $\"2.75\"$ -> total cost is each necklace cost $ $\"8%2A2.75=22\"$ \r
\n" ); document.write( "\n" ); document.write( "if she sell them for $ $\"12.5\"$ each, she would earn amount of $ $\"12.5%2A8=100\"$ \r
\n" ); document.write( "\n" ); document.write( "from that amount she subtract cost which is $ $\"22\"$
\n" ); document.write( " $ $\"100-22=78\"$ -> which is her profit\r
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