document.write( "Question 762909: The Morgans paid $50.40 for 1500 kilowatts hours of electricity one month and $50.80 for 1680 kwh the next month how much should they expect to pay for 1840 kwh? \n" ); document.write( "
Algebra.Com's Answer #464300 by tommyt3rd(5050)\"\" \"About 
You can put this solution on YOUR website!
We use the data to determine a line:\r
\n" ); document.write( "\n" ); document.write( "\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "and using the first pair of data we can write:\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%0D%0Ay-1500+=+325%28x-50.40%29%0D%0A\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Now when y=1840 we get\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%0D%0A1840-1500+=+450%28x-50.40%29%0D%0A\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "When we solve for x we get x=$51.16\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( ":)
\n" ); document.write( " \n" ); document.write( "
\n" );