A function and its graph are given. Use the second derivative to determine intervals on which the function is concave up. Check these results against the graph shown. 
Definitions:
Buyer
A person or entity that purchases goods or services for personal use, resale, or as part of industrial processes.
Influencer
An individual with the power to affect the purchasing decisions of others due to their authority, knowledge, position, or relationship with their audience.
User
An individual or entity that utilizes a product, service, or system.
Risky Shift
is a phenomenon where a group collectively agrees on a course of action that is more extreme than they would have decided individually.
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