document.write( "Question 5779: I really don't understand this question:\r
\n" ); document.write( "\n" ); document.write( "The cost to rent a car is given by the formula C= 50d + 0.2k,
\n" ); document.write( "where d = the number of days rented
\n" ); document.write( "and
\n" ); document.write( "k= the number of km driven.
\n" ); document.write( "Lin has $300 to spend on car rental for her 4 day holiday. How far can she travel on this holiday?
\n" ); document.write( "

Algebra.Com's Answer #2957 by longjonsilver(2297)\"\" \"About 
You can put this solution on YOUR website!
well, the cost is $300 (this is C), number of days rental is 4 (this is d). Find k.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "C= 50d + 0.2k
\n" ); document.write( "300 = 50*4 + 0.2k
\n" ); document.write( "300 = 200 + 0.2k
\n" ); document.write( "100 = 0.2k
\n" ); document.write( "k = 100/0.2
\n" ); document.write( "k = 500km.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "jon.
\n" ); document.write( "
\n" ); document.write( "
\n" );