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25.02.2020 •
Mathematics
Sarah had invested $800 in a savings account that paid 4.2% interest compounded annually. How much money was in the account after 4 years, if he left the money untouched?
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Ответ:
$943.11
Step-by-step explanation:
Compound Interest formula is:
where
A is the Accrued amount (total earned)P is the Principal (amount initially invested)r is the interest Rate (convert percent to a decimal)t is the Time (number of years)It is given that; P = 800 r = 4.2% (0.042) t = 4
A = 800(1 + 0.042)⁴
A = 800(1.042)⁴
A = 943.106 → A = 943.11 (rounded to the nearest penny)
Sarah invested $800 for four years at an interest rate of 4.2% and accrued $943.11
Ответ:
0.15
Step-by-step explanation: