Pearl Hamill is the owner/operator of a tanning salon. She is considering four prices for a weekly tanning pass. Her estimate of price and quantity demanded are:

Price		Quantity Demanded
$12.40		300
$11.90		320
$10.50		340
$9.50		360

Monthly costs of providing the tanning service include $1,200 of fixed costs and variable costs of $2.50 per service. Which price will yield the largest monthly profit? (Enter loss using either a negative sign preceding the number e.g. -45 or parentheses e.g. (45).)

Price		Profit/(loss)
$12.40		$
$11.90		$
$10.50		$
$9.50		$

A price of $

yields the largest monthly profit.