Math Problem Statement
4 years ago, you invested $15,500. In 5 years, you expect to have $38,916. If you expect to earn the same annual return after 5 years from today as the annual return implied from the past and expected values given in the problem, then in how many years from today do you expect to have $49,795? Round final answer to 2 decimal places.
Solution
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Math Problem Analysis
Mathematical Concepts
Compound Interest
Exponential Growth
Logarithms
Formulas
Compound Interest Formula: A = P(1 + r)^t
Growth Rate Calculation: r = (A / P)^(1 / t) - 1
Time Calculation: t = ln(A' / P') / ln(1 + r)
Theorems
Compound Interest Theorem
Logarithmic Functions
Suitable Grade Level
Grades 10-12
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