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HELP PLEASE

answer choices:
13 in
17 in
21 in
31 in

HELP PLEASE answer choices: 13 in 17 in 21 in 31 in-example-1
User Bumseok
by
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1 Answer

2 votes

Answer:

21 in

Explanation:

As we can see 3 is multiplied by 3 to get 9

5 is also multiplied by 3 to get 15

so 7 should be multiplied by 3 to get 21