math 6 rule pattern

The same rule is used on each of these number column A to get the numbers in Column B.

COlumn A B
-3 -5
0 1
3 3
6 13


Which could be the rule?


Multiply by 2, then add 1
add 1
Subtract 2
Multiply by 3, then add 4


I picked that last one, But I know I am wrong. Help?

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asked by moby
  1. except for
    3 3
    they are all multiply by 2, add 1
    I bet 3 3 should be 3 7

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    posted by Damon
  2. oops! You are right it was suppose to be 3 7 sorry and big thanks!

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    posted by moby
  3. You are welcome.

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    posted by Damon

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