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Answer
The answer and procedures of the exercise are attached in the following image.
Explanation
Please consider the data provided by the exercise. If you have any question please write me back. All the exercises are solved in a single sheet with the formulas indications.

First, figure out what the price of each espresso is in relation to the number of espressos the shop sells. $2 per expresso is the correct answer.
What is the best price option for them to maximize their profit?
[tex]\text{N} = -100 \text{ x }\text{P}+300\\\text{Profit} = \text{Revenue - Cost}\\\text{Profit} = \text{P} \text{ x } \text{N} - 200\\\text{Profit} = \text{P} \text{x} (-100 \text{ x } \text{P} +300)-200-(-100 \text{x} \text{P}+300) \\= -100 \text{ x } \text{P}^2+400\text{P}-500\\\text{P} = 2, \\\text{Profit} = -300\\[/tex]
The choice of the price will be $2/ coffee to maximize their profit.
For more information about costs and profit, refer below
https://brainly.com/question/16787230