document.write( "Question 107671: How much would a young married couple have to invest now at 8%annual interest to get $100,000.00 at retirement in 40 years.What is the equation for this.?The answer is about 4605. \n" ); document.write( "
Algebra.Com's Answer #78436 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
the general equation is a=p(1+r)^n, where a is the amount, p is the principle (starting amount)
\n" ); document.write( "... r is the interest rate (per compounding) and n is the number of compoundings\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "let x=principle ... 100,000=x(1.08)^40
\n" ); document.write( "
\n" );