What is the value of 3 x 3 + 6?

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To find the value of the expression 3 x 3 + 6, you must follow the order of operations, which states that multiplication should be performed before addition.

First, calculate 3 x 3, which equals 9. Then, add 6 to this result. Thus, 9 + 6 equals 15.

This makes the correct answer 15, which corresponds to one of the choices provided. The answer listed as 12 does not reflect the calculation performed; it appears to underestimate the sum by not taking the multiplication fully into account followed by the addition.