6 How long will it take for an investment to double a a 3% per year? (a) simple interest rate (b) compound interest rate Contributed by Hamed Kashani, Saeid Sadri, an Baabak Ashuri, Georgia Institute of Technology 34 A local store charges 11/2% each month on th unpaid balance for its charge account. What nom nal annual interest rate is being charged? What is t effective interest rate?

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Please answer the two questions 3-6 and 3-41
36 How long will it take for an investment to double at
a 3% per year
A
(a) simple interest rate
(b) compound interest rate
Contributed by Hamed Kashani, Saeid Sadri, and
Baabak Ashuri, Georgia Institute of Technology
34 A local store charges 11/2% each month on the
unpaid balance for its charge account. What nomi-
nal annual interest rate is being charged? What is the
effective interest rate?
Transcribed Image Text:36 How long will it take for an investment to double at a 3% per year A (a) simple interest rate (b) compound interest rate Contributed by Hamed Kashani, Saeid Sadri, and Baabak Ashuri, Georgia Institute of Technology 34 A local store charges 11/2% each month on the unpaid balance for its charge account. What nomi- nal annual interest rate is being charged? What is the effective interest rate?
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