It is B: presidential democracy; parliamentary democracy
Helen Keller was the first deaf-blind person to earn a BA degree, she was a fairly prominent figure of the Women's Suffrage and Labor Rights movements, she's one of the most famous deaf people in living history thanks to her many accomplishments despite that particular shortcoming in her lifetime, helped to found the ACLU... these are just a start, but the list goes on. I hope this is at least enough info to help you start, if nothing else.
Answer:The payback period for the nail machine will be after 3 years.
Explanation: After 1 year $90 000 will be generated by Tim according to the Accountant. Then after 2 years we can say $90 000×2 we get $180 00.
Lets's continue to 3 years, we take 3 years× $90 000 we get $270 000.
Therefore the payback is after 3 years.
Or
We can take the selling amount which $270 000 divide it by the net amount we get 3 years, to prove the answer we say : 3× $90 000 which is $270 000.
