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Solve the problem.
-A customer at a store bought 4 bottles of juice and 7 fruit pies for a total cost of $81.50. If x represents the cost of a bottle of juice and y represents the cost of one fruit pie, write an equation in two variables that reflects the
Given conditions.
Ghrelin
A hormone produced by the stomach that stimulates appetite and signals hunger to the brain.
Melatonin
A hormone produced by the pineal gland in the brain, primarily responsible for regulating sleep-wake cycles.
Leptin
A hormone produced by fat cells that helps to regulate energy balance by inhibiting hunger, which in turn diminishes fat storage in adipocytes.
Serotonin
A neurotransmitter in the brain that plays a key role in stabilizing mood, feelings of well-being, and happiness.
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