Question

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Answer 1

Common ratio: 2

Answer 2

32, 64, 128

Answer 3

For #3
Common ratio is -3

Answer 4

I don't have a calculator in front of me, but to find the next 3 terms just keep multiplying the numbers by -3

Answer 5

Okay thank you (:

Answer 6

no problem ;)

Answer 7

Common ratio is 2, next 3 terms are 32,64,128

Answer 8

@arereben can you help me on # 2??

Answer 9

The terms seem to be divided by 4 each time.

Answer 10

thanks again @alante14 (:

Answer 11

The common ratio is 1/4, the next 3 terms are 20/4,80/4,320/4

Answer 12

You should be able to find the common ratio yourself without any difficulty.
Divide the second term by the first to get the common ratio. Check by dividing the third term by the second — should get the same result.

For sequence {2,4,8,16,...}
4/2 = 2
8/4 = 2
16/8 = 2
see a pattern? common ratio is 2

For sequence {80,20,5,5/4,...}
20/80= 1/4
5/20 = 1/4
(5/4)/5 = 1/4
common ratio is 1/4

For sequence {2,-6,18,-54,...}
-6/2 = -3
18/-6 = -3
-54/18 = -3
common ratio is -3

Answer 13

Remember that the common ratio is the number that multiplies the first term to get the next term.

Answer 14

Okay I will (: thanks so much @whpalmer4