An example of a feedback control is a(n)

A man bought the contents of a store for $9,300. He sold the goods for 1/3 more than they cost him. He lost 15% of the selling price in bad debts. His entire profit on this investment was:

A: 18-1/3%; B: $1,240; C: $1,860; D: $3,100.

Which of the following is a salutopening?

A) Dear Professor Milford: B) Dear Esteemed Professor Milford,It has come to our attention that you are interested in joining our research team in Winslow, Arizona. We think you can be a good fit! C) Attention: Professor J. J. Milford Thank you, Professor Milford, for your prompt response. D) Attention: Professor J. J. Milford