Answer:
9
Explanation:
Plug in 3 where x is.
2(x) + 3
2(3) + 3
Two times 3 equals 6, and six plus 3 equals 9.
So the answer is 9
You would do 2[3]+3 because you plug in the three for the x and it gives you 9 if you use a calculator be sure to use [ ] where needed.
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