National saving is the nation's income that is left after paying for current consumption and government purchases, that is S = Y-C-G.
What is national saving?
National saving (saving) is the portion of the economy's total income that is left over after paying for consumption and government expenditures. individual saving the amount of money that households have after paying for expenses like taxes and expenditures.
How does national savings affect our economic growth?
Larger investments resulting from stronger GDP growth would be produced by an increase in overall savings. The high savings rates have the effect of increasing capital and boosting the nation's economic growth.
Learn more about national saving:  brainly.com/question/15109837
#SJP4
 
        
             
        
        
        
Answer:
Explanation:
Please check attachment for the solution to the question.
 
        
             
        
        
        
The reserve ratio is the portion of the money of the depositor that should be available in cash in the bank. This amount should only be in the bank and not used for all other purposes. Hence, the balance money can be used for the bank operations, increasing the supply. 
In this item, we are given that the reserve ratio is only 5%. This means that, 95% of the money can be used by the bank for its operation. This amount can be calculated by multiplying the amount deposited by the decimal equivalent of 95%. That is,
          = ($1000)(0.95)
          = $950
Therefore, the money supply will increase by $950. 
        
             
        
        
        
Answer:
To combat decreasing marginal utility.
Explanation:
 
        
             
        
        
        
Answer:
c 
Explanation:
depend on the scenario.. all costs that are directly related to that decision all relevant cost.