If a sum invested gains 10% each year how long will it be before it has doubled its
value?
1 answer:
Using an exponential equation, it is found that it will be 7.3 years before the value is doubled.
The equation for an increasing <u>exponential function</u> is given by:

In which:
- A(0) is the initial amount.
- r is the growth rate, as a decimal.
In this problem:
- Gains 10% each year, thus
.
The doubling time is t for which
, then:







It will be 7.3 years before the value is doubled.
A similar problem is given at brainly.com/question/23008760
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