Posted by **Catie** on Sunday, July 15, 2012 at 10:30pm.

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 -
**Reiny**, Sunday, July 15, 2012 at 10:47pm
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 -
**Catie**, Sunday, July 15, 2012 at 11:17pm
Thank you!!

- Calculus -
**Anonymous**, Monday, July 16, 2012 at 10:18am
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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