document.write( "Question 849915: Mike rode his bike 4 miles from his house to his friend's house. from there, they took a car and drove 25 miles to a concert. Assume the average rate of the car was 45 mph faster than the average rate of his bike.\r
\n" ); document.write( "\n" ); document.write( "A. Express the total time required to complete the 29 mile trip (bike and car) as a function of the rate x of the bike.\r
\n" ); document.write( "\n" ); document.write( "B. Find algebraicallu or graphcally the rate of the bike if the total time of the trip was 1 hour and 45 mins.
\n" ); document.write( "

Algebra.Com's Answer #511935 by josgarithmetic(39630)\"\" \"About 
You can put this solution on YOUR website!
_________________speed____________time__________distance
\n" ); document.write( "Bike______________r______________________________4
\n" ); document.write( "Car______________r+45____________________________25\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Fill the time slots using T=D/R from the basic travel uniform rate equation\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "_________________speed____________time__________distance
\n" ); document.write( "Bike______________r_______________4/r_____________4
\n" ); document.write( "Car______________r+45_____________25/(r+45)_______25\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Question A Total time, \"%284%2Fr%29%2B25%2F%28r%2B45%29\".\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Question B: If you want the time to be 1 hour 45 minutes, this is \"1%263%2F4\" hours. Solve the equation, \"%284%2Fr%29%2B%2825%2F%28r%2B45%29%29=1%263%2F4\".\r
\n" ); document.write( "\n" ); document.write( "You start this way:
\n" ); document.write( "LCD is \"r%28r%2B45%29\".
\n" ); document.write( "
\n" ); document.write( "\"4%28r%2B45%29%2B25r=%287%2F4%29%28r%5E2%2B45r%29\"
\n" ); document.write( "\"16%28r%2B45%29%2B100r=7%28r%5E2%2B45r%29\"
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( "
\n" );