document.write( "Question 430347: Mary is certain that every time she parks in the municipal parking garage it cost her at least a $1.20. If the garage charges .40 cents plus .20 cents for each 1/2 hour, how long is Mary's car parked? \n" ); document.write( "
Algebra.Com's Answer #298925 by jorel1380(3719)\"\" \"About 
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If it costs $1.20 to park the car for X 1/2 hours, then:\r
\n" ); document.write( "\n" ); document.write( "$1.20=.40+.20X
\n" ); document.write( ".80=.20X
\n" ); document.write( "4=X\r
\n" ); document.write( "\n" ); document.write( "Therefore, Mary's car is parked for 4 half-hours, or 2 hours.
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