Solve.The amount (in g) of a radioactive substance remaining after time t (in months) is given by the function . Express  in polynomial form by using the first three terms of the Maclauren expansion.

A. 320 - 6.4t + 0.064t2 + . . .
B. 320 + 6.4t + 0.064t2 + . . .
C. 320 - 320t + 160t2 + . . .
D. 320 - 6.4t + 0.128t2 + . . .


Answer: A

Mathematics

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Mathematics