$\"\"$

The functions are $\"\"$ and $\"\"$ .

Where $\"\"$ represents company cost ,

$\"\"$ represents the companys revenue and

$\"\"$ represnts the no.of untis produced and sold in a day.

(a).

Find $\"\"$ value when $\"\"$ .

Substitute $\"\"$ and $\"\"$ in the function $\"\"$ .

$\"\"$

The break even point occurs when the company sells $\"\"$ units.

$\"\"$

(b)

Find the value of $\"\"$ when $\"\"$ .

Substitute $\"\"$ and $\"\"$ in the function $\"\"$ .

$\"\"$

The company makes profit it it sells more than $\"\"$ units..

$\"\"$

(a) The break even point occurs when $\"\"$ units.

(b) The company makes profit when $\"\"$ units.