Trading goods and services in exchange for other goods and services is a *blank* system. Answers: borrowing, lending, money, or barter​

the correct answer is ) possibility.

demonstrating opportunity cost is done through production possibility.

the opportunity cost can be demonstrated using the production possibility frontier or curve. this graphic shows the total number of possibilities for two products when we have the resources needed and used in an efficient manner. the main resources could be money, labor, and technology. the curve shows that the production of one good increases when the production of the othe

answer; i believe that the correct answer is (scientific approach)

what is the tax base for the sales tax?

it should be (usually ) 6%