Hardigree Insurance has collected the following information over the last six months.

Month Units produced Total costs

March 2,000 $6,700

April 3,200 9,400

May 2,200 7,100

June 3,000 9,500

July 2,800 8,000

August 2,100 6,600

Using the high-low method, how much is the total fixed cost?

$2,200

$7,910

$2,300

$4,400