what is your question ??
I think u have missed some parts here in the question ..
Answer:
d. equals the dollar amount of outstanding U.S. Treasury bonds
Explanation:
The National debt is entirely represented by the total dollar amount of outstanding U.S. Treasury bonds, both those bonds that are held by the public (private citizens), or by other governments.
Currently, the U.S. National Debt is over 24 million, and the amount of debt that can be issued in the form of U.S. Treasury bonds is limited by the national debt ceiling.
Bond is correct answer.
When a bond matures, you receive your entire investment back plus any remaining interest.
Hope it helped you.
-Charlie
Things that would cause prices to drop would be the quantity if there is more of that thing the price drops or the value of that thing just drops.
Answer: Economic Surplus : $12
Explanation: Economic surplus is the difference between benefit and cost.
In this case, since he is working as a math tutor, he will get $45, there is no other cost. But if he goes for a movie, he will have to spend $12 on movie, which is the cost he needs to bear. The economic surplus is $12 which is not spent on the movie and worked as a math tutor.