Answer:
448
Step-by-step explanation:
So, here is the formula for that:
Fa=Ia(1+per)
First off, the percentage(per) would be represented as a decimal(.12). The initial amount (Ia) would be 400. The "+" is there because of increasing interest. This would be the equation:
400(1+.12)
Use the distributive property and you get 448
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