document.write( "Question 534363: the cost of electricity is $.08 for each of the first 300 kWh and $.13 for each kwh over 300 kwh. Find the number of Kilowhatt-hours used by a family that receaives a $51.95 electric bill. \n" ); document.write( "

Algebra.Com's Answer #351468 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"n\"$ = number of kWh used
\n" ); document.write( "given:
\n" ); document.write( " $\"+51.95+=+.08%2A300+%2B+.13n+\"$
\n" ); document.write( " $\"+51.95+=+24+%2B+.13n+\"$
\n" ); document.write( " $\"+.13n+=+51.95+-+24+\"$
\n" ); document.write( " $\"+.13n+=+27.95+\"$
\n" ); document.write( " $\"+n+=+215+\"$
\n" ); document.write( "They used 215 kWh \n" ); document.write( "

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