Scenario 5.1 The Demand for Noodles Is Given by the Following Equation

Scenario 5.1
The demand for noodles is given by the following equation: Q = 20 - 4P + 0.2I - 2P_x. Assume that P = $8, I = 200, and P_x = $10.
-To economists, feelings such as peace, serenity, religious devotion, and self-esteem are captured in the concept known as _____.

A) rational self-interest
B) utility
C) profit
D) total revenue
E) surplus