PSAT Math Multiple-Choice Practice Question 744

Question: 744

A new business uses a crowdfunding website to raise money for its expansion. The graph below plots the number of new investment pledges per week, collecting the data once at the end of each week after the crowdfunding has begun. For example, "Week 1" gives the total number of new pledges at the very end of Week 1.

A marketing professional defines the point at which something goes "viral" as the point at which the item shifts from linear to exponential growth. During which week does the value of the new investment pledges become viral?

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