Summary (Grade 11 NSC Matric Mathematics): Quizzes

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Which formula represents compound interest calculations?

A=P(1+i)nA = P(1 + i)^n

Why does simple interest remain constant each year?

Calculated only on original principal

Which formula shows simple depreciation?

A=P(1−in)A = P(1 - in)

What does compound interest calculate on?

Principal and previously earned interest

What does PP represent in interest formulas?

Principal (initial amount)

What is the nominal interest rate?

Stated annual rate without compounding

How does effective rate compare to nominal rate when compounding occurs more than once yearly?

Effective rate is always higher

In 1+i=(1+i(m)m)m1 + i = \left(1 + \frac{i(m)}{m}\right)^m, what does mm represent?

Number of compounding periods per year

What effective rate equals 8.75% nominal compounded monthly?

9.12%

When comparing loan options with different compounding, which rate should you compare?

Effective annual rates

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