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September 21, 2014

September 21, 2014

Posted by **rene** on Wednesday, September 15, 2010 at 7:00pm.

of 11.1% per year. How long will it take for infant mortality

to be reduced by 33%?

- calculus -
**Reiny**, Wednesday, September 15, 2010 at 7:11pmsolve

.67 = 1(.889)^n

ln .67 = ln (.889^n)

ln .67 = n ln (.889)

n = ln .67/ln .889 = 3.4 years

- calculus -
**rene**, Thursday, September 16, 2010 at 4:30pmthank you!

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