document.write( "Question 86995: PLEASE HELP ME I NEED HELP UNDERSTANDING HOW TO SOLVE THEM STEP BY STEP....\r
\n" ); document.write( "\n" ); document.write( "Problem #8
\n" ); document.write( "Which of the following investments is larger after 19 years?\r
\n" ); document.write( "\n" ); document.write( " (a) $7500 is deposited annually and earns 4.5% interest compounded annually.
\n" ); document.write( " (b) $600 is deposited monthly and earns 4.5% interest compounded monthly.\r
\n" ); document.write( "\n" ); document.write( "Problem #9
\n" ); document.write( " Find monthly payment.\r
\n" ); document.write( "\n" ); document.write( "In order to purchase a home, a family borrows $26000 at 10.8 % for 15 yr. What is their monthly payment? Round the answer to the nearest cent.
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Algebra.Com's Answer #62958 by stanbon(75887)\"\" \"About 
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Problem #8
\n" ); document.write( "Which of the following investments is larger after 19 years?\r
\n" ); document.write( "\n" ); document.write( " (a) $7500 is deposited annually and earns 4.5% interest compounded annually.
\n" ); document.write( " (b) $600 is deposited monthly and earns 4.5% interest compounded monthly.
\n" ); document.write( "-------
\n" ); document.write( "Compare their growth using compound interest formula and the the Future Value formula:
\n" ); document.write( "Compound Interest: FV = (principal)(1+r/n)^(nt)
\n" ); document.write( "FV = 7500(1+0.045/1)^(1*19)
\n" ); document.write( "-------
\n" ); document.write( "Future Value: FV = (periodic payment)[(1+i)^n -1]/i
\n" ); document.write( "where periodic payment = $600; n=12*19 ; i=0.045/12
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\n" ); document.write( "\n" ); document.write( "Problem #9
\n" ); document.write( " Find monthly payment.\r
\n" ); document.write( "\n" ); document.write( "In order to purchase a home, a family borrows $26000 at 10.8 % for 15 yr. What is their monthly payment? Round the answer to the nearest cent.
\n" ); document.write( "--------
\n" ); document.write( "Use this annuity formla:
\n" ); document.write( "balance = (loan amt)(1+i)^n - [P/i][(1+i)^n - 1]
\n" ); document.write( "You want the balance to be zero;
\n" ); document.write( "loan amt=26000
\n" ); document.write( "i=0.108/12
\n" ); document.write( "n=12*15
\n" ); document.write( "Solve for P=monthly payment.
\n" ); document.write( "--------
\n" ); document.write( "I get $292.26
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
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