Respuesta :

catrionac
P = principal amount = $13,824
t = time = 2 years 
A = final amount = $20,184

 $20,184 = ($13,824)(1 + r)^2
(1 + r)^2 = $20,184/$13,824 
(1 + r)^2 = about 1.46 
1 + r = [tex] \sqrt{1.46} [/tex]
1 + r = about 1.2 
r = 1.2 - 1 
r = 0.2 

so about 20% annually

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