(Figure: Good Y and Good X V) In panel (a) , the price of good X is $1.50 per unit and the price of good Y is $3 per unit. In panel (b) , the consumer's income increased from $400 to $480.
Panel (a) Panel (b) 
Using panel (b) , good X is a (an) _____ good.
Definitions:
Contaminate Groundwater
The process by which groundwater becomes polluted due to the infiltration of hazardous substances, impairing its quality and usability.
Human Made
Refers to objects, environments, or concepts that are created, influenced, or altered by human beings rather than occurring naturally.
Insecticides
Chemical substances used to kill or control insect pests, playing critical roles in agriculture, disease vector control, and household pest management.
Water Table
The upper level of an underground surface in which the soil or rocks are permanently saturated with water.
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