PSAT Math Multiple-Choice Practice Question 745
Question: 745
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.
Given that the function increases at the same geometric rate as it does in weeks 9–12, what would most likely come closest to the number of new investment pledges in week 14?
Correct Answer: A
Explanation:
(A) "Geometric" is synonymous with "exponential." Estimate the approximate increase given the rate of exponential growth and starting point at week 12. Fortunately, the answers are far enough apart that 450 is the only reasonable option. The other options all represent far too large an increase.
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