Understanding Compound Interest and Logarithms

What is the principal amount Melody initially deposits into her savings account?

• $4,000

• $8,000

• $6,000

• $2,000

Which mathematical concept is used to solve for the time it takes for Melody's savings to double?

• Geometry

• Algebra

• Logarithms

• Calculus

What is the base used in the logarithm to solve for the time in the compound interest problem?

• e

• 1.02

• 2

• 10

According to the Rule of 72, how many years will it take for an investment to double with a 2% interest rate?

• 36 years

• 34 years

• 33 years

• 35 years

What is the Rule of 72 used for in financial calculations?

• Determining the principal amount

• Estimating the time to double an investment

• Finding the future value of an investment

• Calculating interest rates