When it comes from a friend, these viral marketing messages could yield to a much higher chance of being opened and exposed. By definition, a viral marketing is a common method used in the marketing industry wherein the company would request people, mostly in social media, to share their products.
The calculated present value of the annuity is $915,166.70.
Explanation and Solution:
Annuity is a collection of fixed payments made or earned either at the close or at the beginning of any term such that a significant initial payment or receipt may be turned into a set of comparatively minor payments or receipts. An annuity that lasts indefinitely is called perpetuity.
The formula for the present value of the annuity is given by:

Where;
R = annual payment = $75,000
i = interest rate = 5.25%
P = Present value of annuity
n = number of years = 20 years
P = 
P = $915,166.70
David's decision on the electronics to purchase represents opportunity cost.
The decision to hire another economist is marginal analysis.
Ana's decision on how to use her time involves opportunity cost.
<h3>What is opportunity cost?</h3>
Opportunity cost of the next best option forgone when one alternative is chosen over other alternatives. When an economic agent chooses one option, he would not be able to choose another option.
<h3>What is marginal analysis?</h3>
Marginal analysis involves comparing the marginal cost or / and the marginal benefit of a decision.
To learn more about opportunity cost, please check: brainly.com/question/26315727
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Answer:
the cost of Human Resources would be allocated to Machining is $480,000
Explanation:
The computation of the cost of Human Resources would be allocated to Machining is given below:
= Cost of the human resource × machining department ÷ (machining department + assembly department)
= $1,200,000 × 100 ÷ (100 + 150)
= $480,000
hence, the cost of Human Resources would be allocated to Machining is $480,000