Question 980602:  I'm having trouble finding 2a+b given: a= <-3,4>,  b=<2,5>,  c= <3,-8>. 
Please help me with this problem.
 
Thank you. 
 Answer by Edwin McCravy(20064)      (Show Source): 
You can  put this solution on YOUR website! 
Here's one exactly like yours with the numbers changed:
  
Find 3a+b given: a= <-2,5>,  b=<3,7>. 
Substitute:
3   a   +   b
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3<-2,5> + <3,7>
<-6,15> + <3,7>
    <-3,22> 
Now do yours exactly the same way.
Edwin 
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