document.write( "Question 121613: It costs $1.50 per day to place a one line ad in the classifieds plus a flat service fee. One day costs $3.50 and four days costs $8.00. Write a linear equation that the cost in dollars, y, in terms of the number of days the ad appears, x. \n" ); document.write( "
Algebra.Com's Answer #89286 by oscargut(2103)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "let f the name of the fee\r
\n" ); document.write( "\n" ); document.write( "then 1.5+f=3.5 then f=2\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "then y = 1.5x + f or y = 1.5x + 2\r
\n" ); document.write( "\n" ); document.write( "(look that verifies 4 days $8 )
\n" ); document.write( "
\n" );