This is called a key attribute!
There are different types of key attributes!
Primary key is the key that is actually chosen, for example a social security number.
There is also a unique key, say our finger prints! they also uniquely identify humans, but usually we prefer to use social security number when we list people (a unique key could be a primary key if we chose so)
We could also identify people by their social security number and a name, but this is unnecessary, as social security number already gives a full identification. Such a reduntant key is called super key.
Assuming that this company sells all that it produces, the profit function would be given by P(x) = -0.5(x - 100)² + 5,000 - 50x - 100.
<h3>What is profit?</h3>
In Economics, profit can be defined as a measure of the amount of money (revenue) that is generated when the selling price is deducted from the cost price of a good or service, which is usually provided by producers.
This ultimately implies that, all producers generally work to maximize their profits and make them as large as possible, in order to enable them break even and successful.
Mathematically, the profit function P(x) of a business firm simply refers to the revenue function R(x) minus the cost function C(x):
P(x) = R(x) - C(x)
Where:
- R(x) represents how much it takes in.
- C(x) represents how much it spends.
Substituting the given parameters into the formula, we have;
P(x) = -0.5(x - 100)² + 5,000 - (50x + 100)
P(x) = -0.5(x - 100)² + 5,000 - 50x - 100
Read more on maximized profit here: brainly.com/question/13800671
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You'll need a helper variable for this, so depending on your programming language, the solution becomes:
int helper;
helper = arr[i];
arr[i] = arr[j];
arr[j] = helper;
