document.write( "Question 253822: Diane knows a phone call to a friend costs .25 for the first three minutes and .10 for each additional minute. Let y be the cost of a call that lasts x minutes. Write the slope and an equation relating x and y. Thank you! \n" ); document.write( "
Algebra.Com's Answer #186162 by richwmiller(17219) You can put this solution on YOUR website! \n" ); document.write( "y=.10(x-3)+.25 \n" ); document.write( "y=.10x-.3+25 \n" ); document.write( "y=.10x+24.7 \n" ); document.write( "slope =.10 or 1/10 \n" ); document.write( " \n" ); document.write( " |