Respuesta :

Answer:

13.

Step-by-step explanation:

2, 3, 3, 7, 12, 14, 15, 18, 19, 20

3,3,7,12,14,15,18,19

3,7,12,14,15,18

7,12,14,15

12,14

^ Mean: 13

Uhh it's easy, did you really pay attention at ALL during the lesson. Literally don't judge on here but really!!!?