Economists in Funlandia, which has a closed economy, have collected the following information about the economy for a particular year:
Y = 12,500
C = 9,000
T = 2,100
G = 2,200
The economists also estimate that the investment function is:

I = 2,000−100r
where r is the country’s real interest rate, expressed as a percentage.

Calculate private saving, public saving, national saving, investment and equilibrium real interest rate.

Solution and Explanation:

private saving = Y - T - C = 12500 - 2100 - 9000

= 1400

Plublic saving = T - G = 2100 - 2200 = -100

national saving = Y - C - G = 12500 - 9000 - 2200 = 1300

Investment = saving

1400 - 100r = 1300

now, we need to calculate the value of r

-100r = 1300 - 1400

-100r = -100

r = 1

therefore, Investment ( I) = 1400 - 100 ( 1 )

= 1400 - 100

= 1300

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'

answer; management is about coping complexity and leadership is about coping with change; i believe this is correct; ///good luck                                          

(b) management: leadership