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Fill in the blanks: The cumulative sum of all the years of deficit spending in the United States has resulted in                      that exceeds                dollars.


Please show all calulations for each sub-question. Thank you

1. Assess the following functions (15 points):


1. 𝑓 ′(𝑥) = 𝑥 2 + 6𝑥 + 2


2. 𝑓 ′(𝑥) = 10𝑥 − 2𝑥 2 + 5 


a. Find the stationary points.


b. Determine whether the stationary point is a maximum or minimum.


c. Draw the corresponding curves, they can be in the same graph.


Please provide all answers. Thank you.


A firm has the following short-run production function. 𝑸 = 𝟑𝟎𝑳 𝟐 − 𝟎. 𝟓𝑳 𝟑 (15 points).


a. Make a table with two columns: Production and Labour.


b. Add a third column to the table with the marginal product of labor.


c. Graph the values that you estimated for the production function and the marginal product of labor.


Assume that the rand/dollar exchange rate is above the equilibrium exchange rate. This will lead to a


Q2) David’s utility function for good X and Y is given by (𝑥, 𝑦) = 𝑥2𝑦3. Where , 𝑃𝑦 and I 

are the price of good X, price of good Y and consumer income respectively. 

a. Write the budget Constraint of the consumer.

b. Drive the demand functions for good X and Y

c. What combination of X and Y maximizes the consumer’s at I=100, 𝑃𝑥 = 4, 𝑎𝑛𝑑 𝑃𝑦 = 5



The fundamental economic problem society is confronted with involves?


Provide a brief explanation on how the South African economic growth had been performing


since 2000. Further, what conclusions can be drawn from fuel tax increase effects on the


economic growth and public social welfare.

Discuss the fuel tax increase impact the economic growth of S.A

Discuss the fuel tax increase impact the public social welfare

Briefly discuss the relationship between increase on fuel taxes and public social welfare as


well as economic growth in South Africa, make reference to other studies/literature

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