Respuesta :

mathmate
Use
[tex]F=P(1+i)^n[/tex]

Substituting 
F=1000, P=863.84, n=3
solve for i
[tex]1000=863.84^(1+i)^3[/tex]
solving for i 
=> 
[tex]i=(\frac{1000}{863.84})^{\frac{1}{3}}-1[/tex]
=0.0500

Answer: the annual interest rate is 5%

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