Respuesta :

Answer:

80

Step-by-step explanation:

10+10= 20

20+20=40

40+40=80

Answer:

80, -160

Step-by-step explanation:

Each term is being doubled and the sign is reversing for every term. So -10 doubled and flipping the sign results in 20. Doubling 20 and flipping the sign results in -40. So on and so forth.

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