[练习册] OG13-PS:141-160

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If money is invested at r percent interest, compounded annually, the amount of the investment will double in approximately years. If Pat's parents invested $5,000 in a long-term bond that pays 8 percent interest, compounded annually, what will be the approximate total amount of the investment 18 years later, when Pat is ready for college?
  • $20,000
  • $15,000
  • $12,000
  • $10,000
  • $9,000
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