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In the simple interest formula, the amount of money invested is called the:
ACommission
BPrincipal
CInterest
DDiscount
Answer & Solution
Correct answer: B. Principal
1. The formula names each of its quantities.
2. Simple interest depends on an amount, a time and a rate.
3. The amount of money invested is the principal.
4. It is invested for a period of years at an annual interest rate.
_Source: OpenStax Prealgebra 2e (CC BY 4.0), Ch 6 'Percents', sections 6.1-6.5_
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