Answer: Product Life cycle
Explanation: Product Life cycle is a concept used to describe the various stages which a product will have to undergo from the time of introduction into the market till the time it will eventually be out of the market. Different products have different life cycle,the life cycle is determined by different factors. The shape of a product's life cycle is that of a BELL SHAPE
The stages include Introductory stage, Growth stage, Stabilization stage and decline stage.
As the aggregate price level in an economy rises, A. interest rate increase.
<h3>What is interest?</h3>
It should be noted that the interest rate simply means the rate that's put on the money that's collected by an entity.
In this case, when there's an increase in the aggregate price level in an economy rises, the interest rate increase as well.
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The answer s "How to Produce it".
This is not one of the three basic economic questions.
Mostly what they usually asks is what to produce base on the needs of the consumers, where to produce it in where people really are needing it and who will consume what is produced, they may be rich people, etc.
So, 30 billions were borrowed and 50 billion were returned, which means that the amount returned was bigger than the amount borrowed. This means that the there is now less money in the circulation (on people's accounts, money being exchanged between people), which means that the money supply decreased.
