Mathematics, 23.04.2020 12:09 mason3870

Amir is starting a stamp collection. After 3 weeks he has collected 35 different stamps, and after 9 weeks he has collected 105 different stamps.
What is the constant of proportionality in this direct variation?
D.
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Amir is starting a stamp collection. After 3 weeks he has collected 35 different stamps, and after 9

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