document.write( "Question 526341: use the following information.
\n" ); document.write( "On one of the banks of the Chicago River, there is a water cannon, called the
\n" ); document.write( "Water Arc, that sprays recirculated water across the river. The path of the Water
\n" ); document.write( "Arc is given by the model
\n" ); document.write( "y = º0.006x2 + 1.2x + 10
\n" ); document.write( "where x is the distance (in feet) across the river, y is the height of the arc (in feet),
\n" ); document.write( "and 10 is the number of feet the cannon is above the river.\r
\n" ); document.write( "\n" ); document.write( "What is the maximum height of the water sprayed from the Water Arc?\r
\n" ); document.write( "\n" ); document.write( "HELP PLEASE! i'm very stuck on this, and i need to learn it for my test. \n" ); document.write( "
Algebra.Com's Answer #348439 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
use the following information.
\n" ); document.write( "On one of the banks of the Chicago River, there is a water cannon, called the
\n" ); document.write( "Water Arc, that sprays recirculated water across the river. The path of the Water
\n" ); document.write( "Arc is given by the model
\n" ); document.write( "y = -0.006x^2 + 1.2x + 10
\n" ); document.write( "where x is the distance (in feet) across the river, y is the height of the arc (in feet),
\n" ); document.write( "and 10 is the number of feet the cannon is above the river.
\n" ); document.write( "What is the maximum height of the water sprayed from the Water Arc?
\n" ); document.write( "-----------------
\n" ); document.write( "max occurs when x = -b/(2a) = -1.2/(2*-0.006) = 100
\n" ); document.write( "f(100) = -0.006(100)^2 + 1.2*100 + 10 = 70 feet
\n" ); document.write( "---
\n" ); document.write( "Maximum height: 70 feet
\n" ); document.write( "==========================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "================ \n" ); document.write( "
\n" );