Use the following to answer questions:
Figure: The Demand for Shirts 
-(Figure: The Demand for Shirts) Look at the figure The Demand for Shirts. The Demand for Shirts. At a price of $40, total revenue is:
Definitions:
Total Income
The sum of all earnings or revenue generated by an individual or entity from various sources before any deductions.
Poverty Threshold
The lowest amount of money required to maintain a sufficient quality of life in a specific nation.
General Level
Often refers to the overall scope or extent of something, such as a general level of understanding or activity, but in an economic context, it might not have a specific definition.
Real National Income
A measure of the total income of a country adjusted for price changes over time, indicating the real purchasing power of income.
Q3: A price ceiling below equilibrium will cause
Q19: (Figure: The Demand Curve) Look at the
Q60: (Figure: Tax Incidence) Look at the figure
Q147: One of the ways rent control is
Q152: If the demand curve is downward-sloping and
Q154: (Scenario: The Market for Good X) Look
Q178: Paying a fee every time you use
Q180: (Figure: A Market with a Tax) Look
Q198: (Figure: Wireless Mouse Market) Look at the
Q202: (Figure: Income Tax Payments) Look at the