$\"\"$

(a).

The revenue is $\"\"$ .

The general form of quadratic equation is $\"\"$ .

Consider the two equations $\"\"$ , $\"\"$ , $\"\"$ .

Vertex is $\"\"$ .

Axis of symmetry $\"\"$ .

$\"\"$

Axis of symmetry is $\"\"$ players, since $\"\"$ is in thousands.

The minimum marginal cost is is obtained when there are $\"\"$ players.

$\"\"$

(b)

Find the minimum marginal cost.

Minimum marginal cost occurs at minimum value.

$\"\"$ .

$\"\"$

The mimimum marginal cost is $\"\"$ dollars.

$\"\"$

(a) The minimum marginal cost is is obtained when there are $\"\"$ players.

(b) The mimimum marginal cost is $\"\"$ dollars.