Suppose the revenue (in dollars) for a company is given by R (x )equals 80 x minus 0.03 x squared, where x is the number of items sold. Find the marginal revenue when 1000 items are sold, and write a sentence or phrase explaining its meaning. Use correct units in your answer.

a naked warrant, also known as a covered warrant, is a derivative that allows the holder to buy or sell a security, such as a bond or share. unlike a normal warrant, it is not attached to a newly issued bond or preferred stock.

unsecured bonds: they are not secured by a specific asset, but rather by "the full faith and credit" of the issuer. in other words, the investor has the issuer's promise to repay but has no claim on specific collateral. debt, such as unsecured bond debt, is said to be “subordinated,” or junior, to secured debt.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link :