Respuesta :

Answer:

3x+9

Step-by-step explanation:

since p(x) means p multiplied by x and the answer is 3x it means p=3 so 3(x+3) you multiply 3 by x which is 3x and 3 times 3 which is 9 so 3x+9

The answer is 3x+p9 because the answer is that
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