Calculus

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Zoe purchased a house in 1999 for $196,000. In 2004, she sold the house and made a net profit of $80,000. Find the effective annual rate of return on her investment over the 5-year period. (Round your answer to the nearest hundredth of a percentage point.)

  • Calculus -

    let the rate be i
    then ....
    196000(1+i)^5 = 276000
    (1+i)^5 = 1.408163...
    i+i = 1.07085 ..... I took the fifth root of both sides
    i = .07085

    the effective rate was 7.09%

  • Calculus -

    Thank you!!

  • Calculus -

    Trapezoid has vertices (1,2), (3,2), (1,4), and (3,5). Bounded region is rotated about the y axis. Find the volume using the disk method..

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