The table below shows the relationship between the number of times you get your car washed each month and your total monthly benefit from car washes.Each car wash costs $15. 
How many times a month should you get your car washed?
Definitions:
Drought
A prolonged period of abnormally low rainfall, leading to a shortage of water.
Natural Disturbance
An event caused by non-human forces that significantly alters an ecosystem's structure or function.
Lightning Strike
A natural electrical discharge of very short duration and high voltage between a cloud and the ground or within a cloud.
Forest Fire
An uncontrolled fire that occurs in the wilderness, often in wooded areas, which can have both natural and human causes.
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Q77: Vested benefits<br>A)usually require a certain minimum number
Q125: A rational person:<br>A)makes choices based on total