Producer surplus is
a. measured using the demand curve for a good
b. always a negative number for sellers in a competitive market.
the amount a seller is paid minus the cost of production
the opportunity cost of production minus the cost of producing goods that go unsold.

The amount a seller is paid minus the cost of production.

Explanation:

Producer surplus refers to the difference between the producer's willingness to accept the price for the product and the price they actually received for the product.

It is calculated as follows:

Producers surplus = Amount a seller received - Cost of production

Or

Producers surplus = Actual amount received - Willingness to accept a price

It is a measure of producers welfare.

the answer choices are:

provides online banking

provides automatic payment services

provides home loans by using saving accounts

accept tax return refunds

hopefully someone can answer the question now lol

there's 11 people for the 1st position. then, no matter who gets it, there's only 10 left for the second, and then 9 left for the third. 11 x 10 x 9 = 990.   the answer is there are 990 different ways the positions can be filled by these applicants