Question

Which expression is equivalent to 0.4x + 6x + 12?

(how would i solve this to get an answer?)
A. 18.4x

B. 6.4(x + 12)

C. 10x + 12

D. 6.4x + 12

Answer 1

JUST TOOK TEST  6.4x + 12

Answer 2

Answer: Choice D) 6.4x + 12

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Explanation: The terms 0.4x and 6x would combine to 6.4x since 0.4+6 = 6.4. The 12 at the end just tags along with nothing changing about it. So we go from 0.4x+6x+12 to 6.4x+12