Based on the information given the amount she will earn in interest after 7 years is $14.
We would be using Simple interest formula to determine the interest earn.
Using this formula
Simple interest=Principal×Interest rate×Time
Where:
Principal=$100
Interest rate=2%
Time=7 years
Let plug in the formula
Simple interest=$100×2%×7
Simple interest=$14
Inconclusion the amount she will earn in interest after 7 years is $14.
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