P=400 (your amount invested)
r=.02 (rate as a decimal)
n=1 (number of times compounded per year, annually meaning 1)
t=6 (number of years invested)
you must follow orders of operations when you plug these things in your calculator.
1st step) do .02/1 to get 0.2 then add 1 to get 1.02. raise this to (1*6)and you get roughly 1.126, now multiply this by 400 to get answer D 450.46.
Answer:

Step-by-step explanation:

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Answer:
77.8743
Step-by-step explanation:
that is the awse if not it should look like 77.874
128 mm is the corrrect but not corre I by score u should.