document.write( "Question 632454: A ball is projected off of a 400-ft tall building at a velocity of 45 ft/sec. The function
\n" ); document.write( " f(x)= -16x^2+45x+400 \r
\n" ); document.write( "\n" ); document.write( "(where x is the number of seconds elapsed) models the height of the ball after the toss. The maximum height that the ball reaches is 431.6 ft.
\n" ); document.write( "

Algebra.Com's Answer #398278 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
A ball is projected off of a 400-ft tall building at a velocity of 45 ft/sec. The function
\n" ); document.write( " f(x)= -16x^2+45x+400 \r
\n" ); document.write( "\n" ); document.write( "(where x is the number of seconds elapsed) models the height of the ball after the toss. The maximum height that the ball reaches is 431.6 ft.
\n" ); document.write( "---------------
\n" ); document.write( "Do you have a question?
\n" ); document.write( "
\n" );