Answer:
D. Engaging in active portfolio management to enhance returns
Explanation:
Answer:
A) the firm should hire additional workers.
Explanation:
if the marginal production of the tenth worker is 5 units or output and the price of each unit is $4, the the workers total marginal product revenue (MPR) = 5 units x $4 per unit = $20
Since the cost of hiring that tenth worker is $15 (less than MPR), then the company should hire more additional workers until the MRP = labor cost
Answer:
Ans. c) The annual percentage rate of the loan is approximately 913%
Explanation:
Hi, well, she borrowed $75 and paid $90 ($75 + $15 fee) in 8 days. So we need to use the following formula to check what 8 days percentage rate was applied to this loan.

That is:

So she pays 20% for 8 days, to know the annual rate (approx.) we need to do the following operation.

That is 913% per year.
Best of luck.
Answer:
Left by $400; Left by $300
Explanation:
Given that,
Marginal propensity to consume, MPC = 0.75
Government spending multiplier = 4
(a) If the government decreases its purchases by $100 million, then the magnitude of the shift in aggregate demand curve is calculated by multiplying the change in government spending to the government spending multiplier.
Aggregate demand curve shift left by
= Change in government spending × Government spending multiplier
= $100 × 4
= $400 million
(b) If the government increases income taxes by $100 million, then the magnitude of the shift in aggregate demand curve is calculated by multiplying the change in taxes to the tax multiplier.
Tax multiplier:
= MPC ÷ (1 - MPC)
= 0.75 ÷ (1 - 0.75)
= 0.75 ÷ 0.25
= 3
Aggregate demand curve shift left by
= Change in taxes × Tax multiplier
= $100 × 3
= $300 million