It is geometric because it is increasing by a common factor. If you multiply the previous number by 6 you receive the next number. If it were arithmetic you would add the number, not multiply.
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Step-by-step explanation:
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Answer in the image
Step-by-step explanation:
I believe it is D, stratified random sampling.
Hope this helps!!
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Step-by-step explanation:
17x – 7y = 19
17x – 19 = 7y
y = (17/7)x - 19/7