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Answer:
The answer is: A. ($38.40)
Step-by-step explanation:
640 times 0.03 times 2
3% as a decimal is 0.03 because think of 100 whenever you see these numbers as percentages. So if you had 30% you would have 0.30 but 3 is only 0.03 so then you just multiply by the number of years which is 2. Hope this helps!!!