Answer: P(x) = 0.50x - 5
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Explanation:
x = number of glasses sold
She charges $0.50 per glass, so her revenue is
R(x) = 0.50x
which is the amount of money she brings in
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Her cost function is
C(x) = 5
assuming she only spends that $5.00 on the supplies mentioned.
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The profit P(x) is the difference of revenue and cost
Profit = Revenue - Cost
P(x) = R(x) - C(x)
P(x) = 0.50x - 5
