Use the following to answer questions:
Figure: The Marginal Benefit Curve 
-(Figure: The Marginal Benefit Curve) Look at the figure The Marginal Benefit Curve. The total benefit of mowing seven lawns is approximately:
Definitions:
Marijuana
A psychoactive drug from the Cannabis plant used for medical or recreational purposes.
Amphetamine Derivative
A substance chemically related to amphetamine, used for various medical purposes but may also have stimulant effects or potential for abuse.
Mild Hallucinogen
A substance that induces mild alterations in perception, mood, and thought, typically without causing delusions or loss of touch with reality.
Ecstasy
A state of intense joy and happiness, or a drug known for inducing feelings of euphoria.
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