document.write( "Question 946347: A car travel for a total of 14 hours. The car averages 70 miles per hour for y hours and averages 55 miles per hour for the rest of the time. Express the total distance traveled by the car in terms of y. \n" ); document.write( "
Algebra.Com's Answer #577328 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
A car travel for a total of 14 hours.
\n" ); document.write( " The car averages 70 miles per hour for y hours and averages 55 miles per hour for the rest of the time.
\n" ); document.write( " Express the total distance traveled by the car in terms of y.
\n" ); document.write( ":
\n" ); document.write( "From the information given, we know
\n" ); document.write( "Car 1 averaged 70 mph for y hrs
\n" ); document.write( "then, since the total travel time is 14 hrs,
\n" ); document.write( "car 2 averages 55 mph for (14-y) hrs
\n" ); document.write( ":
\n" ); document.write( "dist = speed * time
\n" ); document.write( ":
\n" ); document.write( "d(y) = 70y + 55(14-y)
\n" ); document.write( "d(y) = 70y + 770 - 55y
\n" ); document.write( "d(y) = 70y - 55y + 770
\n" ); document.write( "d(y) = 15y + 770
\n" ); document.write( "
\n" );