Answer: A. 2.05 B. 5.10 C. 0
Explanation: Payback period can be defined as the period under which the profits or savings in an investment can recover the initial outlay invested in that investment. In simple words we can say that it is the time required by an investment to pay for itself.
Pay back period is computed as follows :-

therefore,
A.
=2.05years
B.
=5.10years
C.
=0
Answer:
The correct answer is letter "C": natural resources.
Explanation:
Factor endowment refers to the factors of production -<em>land, labor, capital, and entrepreneurship</em>- a nation has available for manufacturing. Countries with more factors of production available tend to be richer than those that do not. Possessing more factor endowments available can also play a key role for countries to establish a comparative advantage compared to other nations.
Therefore, <em>American economist Michael E. Porter (born in 1947) is likely to consider natural resources a basic factor endowment while skilled labor force, for instance, would be considered as an advanced factor of production. </em>
Answer:
The correct answer is: Unearned Revenue.
Explanation:
Unearned Revenues are advance payments that a company or individual collects for products and services that it has not yet rendered or delivered. Other terms for unearned revenue are advanced payments or deferred revenue. Unearned income must be debited to a cash account and credited to a liability account in compliance with the Generally Accepted Accounting Principles (GAAP).
Answer:
Password and U2F token
Explanation:
The password and the U2F token do not include user identification but are applied or used for two factors authentication
Here password could be for social websites like login to social websites. When login it asks for authentication for higher security so that the hacking could be minimized
The U2F refers to the universal two-factor authentication. It can be used through the USB, NFC, Bluetooth device