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Plz help the is 5th grade math and i don't get it

2, 10, 6

Step-by-step explanation:

160 is half of 320, so that's a divide by 2. 80 is half of 160, so that's also divide by 2. This is the first answer.

Now, we want to know how many weeks until 10 slices are sold in the week. That's the second answer.

To get the third answer, we'll just go down from 80. 80 divided by 2 is 40, so in the 4th week, the cafeteria would sell 40 slices. Divide 40 by 2 and we'll get 20. So, in the fifth week, the cafeteria would sell 20 slices.

20 divided by 2 is 10. That's the sixth week. So, in the sixth week, the cafeteria sells 10 slices. That's the third answer.

correct answer:

i^31 = -i