Explaining Continuous Compound Interest Rate Calculation to a Client
You are working as a customer service representative at a local credit union. A member comes to your desk wanting to understand how the credit union calculates the required interest rate for a long-term goal. Specifically, they have 10,000 that they want to invest, and they need it to grow continuously to 150,000 over a period of 29 years.
To help them understand the math, write an explanation that outlines the following:
- State the formula used for continuous compound interest and define what each variable (, , , and ) represents in the context of the member's investment.
- Substitute the member's values (10,000, 150,000, and 29) into the formula.
- List the mathematical operations required, step-by-step, to isolate and solve for the rate , including how to eliminate the base using logarithms.
- Show the final solved equation for and state the approximate required rate as a percentage.
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Explaining Continuous Compound Interest Rate Calculation to a Client