Approximate the area under the curve over the specified interval by using the indicated number of subintervals (or rectangles) and evaluating the function at the right-hand endpoints of the subintervals. Compute the approximate area using up to four decimal places as needed. 
from 
to 
subintervals.
Definitions:
Only-Born Adults
Adults who grew up as an only child, which may influence their personality, behaviors, and social interactions.
Self-Esteem
An individual's overall subjective evaluation of their own worth and capabilities.
More Selfish
Displaying an increased focus on one's own needs and desires, often at the expense of considering others'.
More Cooperative
Exhibiting a greater willingness or tendency to work together with others towards common goals or interests.
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