Answer asap set up the following subtraction in a vertical format and select the correct answer. take -4 + 3a^2 from 7a - a ^2 a) -4a^2 - 7a - 4 b) -4a^2 - 7a + 4 c) -4a^2 + 7a + 4 d) 4a^2 + 7a + 4

answer: when you burn wood, the carbon reacts with the oxygen in the air to create ash and smoke. that is a permanent change you cannot undo that.

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your question is incomplete, write all the numbers in the sequence that it tells you.  

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