$\"\"$

Observe the table :

Express the relation as a set of ordered pairs.

Write the number of fish as the $\"\"$ -coordinate and the corresponding total cost as the $\"\"$ - coordinate.

The ordered pairs are $\"\"$ .

Therefore, the domain is the set of $\"\"$ -coordinates and the range is the set of $\"\"$ -coordinates.

So, the domain is $\"\"$ and the range is $\"\"$ . $\"\"$

The domain is $\"\"$ and the range is $\"\"$ .