4,000×0.90=3,600
4,000×0.05=200
200÷3,600=0.056*100=5.6%
Not 100% sure but I would say the second one but don't hold me to it. Go with your gut feeling.
Answer:
In economics, the marginal cost of production is the change in total production cost that comes from making or producing one additional unit. To calculate marginal cost, divide the change in production costs by the change in quantity.
Answer:
$146,105.22.
Explanation:
First, find the monthly interest rate from an effective rate of 6%
Rate = (1.06) ^ (1/12) - 1 = 0.00486755
Present value = 1692 [1 - (1.00486755) ^ - (180-100)] / 0.00486755 = 111,894.78
At closing = 258,000 - 111,894.78 = $146,105.22
To convert energy into food I think I'm not sure