Mathematics, 09.03.2021 03:00 emmafrye1

Cailynn, an eight year old girl has saved up a total of $400.00 from birthday checks from her grandparents over the years. Her parents put the money into a savings account for her. For the next two years it is earning interest
compounded monthly. When she turns 10 years old she has a balance of $507.89. What is her account's interest
rate? How much did the account balance increase?

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Cailynn, an eight year old girl has saved up a total of $400.00 from birthday checks from her grandp...