Vector A is 2.0 + 3.5 . Vector B is -3.1 - 3.1 . What is A + 2B?
A. -4.2 + -2.7
B. -1.1 - 0.4
C. 5.1 + 6.6
D. 8.2 + 9.7
The answer is :
A. -4.2 + -2.7
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