document.write( "Question 1153937: Suppose the distance a person can see to the horizon is approximated by the function D(h)=1.3*square root of h, where D is the number of miles a person can see to the horizon from a height of h feet. Jay is on the deck of a boat and can see 5.2 miles to the horizon. What is his height above the water? \n" ); document.write( "
Algebra.Com's Answer #776267 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
\r
\n" ); document.write( "\n" ); document.write( "\"D%28h%29=1.3%2Asqrt%28+h%29\", where \"D\" is the number of miles a person can see to the horizon from a height of \"h\" feet. \r
\n" ); document.write( "\n" ); document.write( "if Jay is on the deck of a boat and can see \"5.2\" miles to the horizon:\r
\n" ); document.write( "\n" ); document.write( "\"D%28h%29=5.2\"\r
\n" ); document.write( "\n" ); document.write( "\"5.2=1.3%2Asqrt%28+h%29\"\r
\n" ); document.write( "\n" ); document.write( "\"5.2%2F1.3=sqrt%28+h%29\"\r
\n" ); document.write( "\n" ); document.write( "\"4=sqrt%28+h%29\"......square both sides\r
\n" ); document.write( "\n" ); document.write( "\"4%5E2=%28sqrt%28+h%29%29%5E2\"\r
\n" ); document.write( "\n" ); document.write( "\"h=16\"\r
\n" ); document.write( "\n" ); document.write( "his height above the water is \"16\" feet\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );