document.write( "Question 280428: Mary is certain that every time she parks in the municipal garage it costs her at least $2.15 if the garage charges 35 cents plus 30 cents for each half hour, how long is Mary's car parked? Mary's cost is at least $2.15 when Mary's car is parked at least ____ hours. \n" ); document.write( "
Algebra.Com's Answer #203815 by richwmiller(17219) You can put this solution on YOUR website! This is not a coin problem! \n" ); document.write( "this is a linear equation problem \n" ); document.write( "y=.30x+.35 \n" ); document.write( "where x is each half hour parked \n" ); document.write( "2.15=.30x+.35 \n" ); document.write( "1.80=.30x \n" ); document.write( "180=30x \n" ); document.write( "6=x \n" ); document.write( "x= 6 half hours to be charged 2.15 for a total of three hours\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |