document.write( "Question 203169: Travel problems I just don't understand. Richard drove his rig at 'x' mph for 3 hours, then increased his speed to (x+15)mph and drove 2 more hours. Wrtie a polynomial that represents the total distance that he traveled. how much distance did he covered if x=45 mph? \n" ); document.write( "
Algebra.Com's Answer #153291 by jejess(7)\"\" \"About 
You can put this solution on YOUR website!
Ok first you need to know the equ.s for speed, distance and time.
\n" ); document.write( "Speed= distance x time
\n" ); document.write( "Distance= speed/time
\n" ); document.write( "Time= speed/distance \r
\n" ); document.write( "\n" ); document.write( "You need to figure out what distance this guy drove for at each speed and then add the together to find the total distance.
\n" ); document.write( "Step one :
\n" ); document.write( "Write down eq's for the two speeds but solving for distance
\n" ); document.write( "D1=x/3 then D2= (x+15)/2
\n" ); document.write( "D1+D2=Total distance
\n" ); document.write( "We know x=45 so we sub 45 in for the all the x's and solve\r
\n" ); document.write( "\n" ); document.write( "D1=x/3 D2= (x+15)/2
\n" ); document.write( " =45/3 = (45+15)/2
\n" ); document.write( " =15miles =30 miles
\n" ); document.write( "D1+D2= total
\n" ); document.write( "15 miles+ 30 miles= 45 miles
\n" ); document.write( "Therefore he travled 45 miles
\n" ); document.write( "** be sure to include all steps and units for full marks \n" ); document.write( "
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