document.write( "Question 254236: A truck traveling at a constant speed on a reasonably staight, level road burns fuel at the rate of g(X)gallons per mile, where x is the speed of the truck in miles per hour and g(X)is given by g(X)=(800+X^2)/200X.\r
\n" ); document.write( "\n" ); document.write( "a). if fuel costs $1.40per gallon, write the cost function, c(X),that express the cost of fuel for a 500 mile trip as a function of the speed. (Hint: 500 x g(x) gallons of fule are needed to go 500 miles) [ small x= symbole of multiplication and big X= alphabetical letter X.]\r
\n" ); document.write( "\n" ); document.write( "b). what driving speed will make the cost of fuel for the trip $250?\r
\n" ); document.write( "\n" ); document.write( "c). what driving speed will minimize the cost of fuel for the trip?\r
\n" ); document.write( "\n" ); document.write( "(thank you very much any help will be appriciated!!!! thanks again sir!!!)
\n" ); document.write( "

Algebra.Com's Answer #187097 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
Don't call us sir.
\n" ); document.write( "Not all of us are males.
\n" ); document.write( "Most males don't like being called sir except for military types.
\n" ); document.write( "
\n" ); document.write( "
\n" );