Provides a means to clearly show economic relationships in two-dimensional space. Economic analysis is often concerned with two variables confined to the upper-right (northeast) quadrant of the coordinate number system.

Answer:

Graphs

Explanation:

A graph is a pictorial representation that shows a relationship between two or more variables. In the context of economics, it represents the clearly relationship in two-dimensional space. Also the economic analysis would be concerned with respect to the two variables.

Therefore as per the given situation, the graph should be the answer

Hence, the same is to be considered

A graph is a representation of a relationship between two or more variables in a visual format. It illustrates the clear relationship in two-dimensional coordinate numbers in the context of economics.

In a complex or coordination compound or a crystal, the coordination number, also known as Ligacy, is the number of atoms, ions, or molecules that a central atom or ion has as its nearest neighbors.

Thus, graphic representation shows the relationships between variables.

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If a store has a “buy one, get one free” sale and an item costs $10, what is the marginal cost of the second item?
A) $7.50
B) $10
C) $5
D) $15
E) $0