Cracking the SAT Physics Subject Test

3 A = 3Ax + 3Ay

4. If the components of A are Ax = 2 and Ay = −3, and the
   components of B are Bx = −4 and By = 2, compute the components of
   each of the following vectors.
   (A) A + B
   (B) A − B
   (C) 2A
   (D) A + 3B

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