WI Forward Grade 7 Mathematics Practice Questions - Wisconsin Forward Exam Grade 7 Mathematics Exam

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An investor opens an account with $2,500. It earns simple interest at a rate of r% per year. After 4 years, the total interest earned is $450. What is the annual interest rate r?

4.5% 4.0% 5.0% 18.0%

Correct Answer:

4.5%

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