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Forming a linear equation

pizZas. A. 30...

Question

A man sells home-made pizzas at $$ 8$ per pizza. He invested an initial $$ 30$ dollars for making pizzas. Write an expression for his profit if he sells N pizzas.

A

30 - 8N

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B

30 + 8N

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C

30N - 8

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D

8N - 30

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Solution

The correct option is D 8N - 30
Total cost = $$ 30$
Total sales (dollars) = 8N
Profit = Total sales - total cost = 8N - 30

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Forming a linear equation

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