At the Post Office, customers wait in a single line for the first open window. Customers enter the post office at an average of 100 per hour, and each window can serve an average of 45 people per hour. The post office estimates a cost of $10 for each minute that a customer waits in line and believes that it costs $30 per hour to keep a window open. What is the minimum number of windows that must be open to prevent the line from growing infinitely long? What is the optimal number of windows to keep open in order to minimize total hourly cost? What is the total hourly cost to operate at the optimal number of windows? (Round your answer to the nearest whole dollar.)

the correct answer would be b, when, queen, calder hall and london.

explanation:

we always capitalize words when a paragraph or sentence is starting, when an important name is used, when a place is being written, or simply when a noun is used, etc. so in this sentence, sentence is starting from 'when', so it will be written in capital letters. secondly, queen is considered to be an important person, so it will also be written in capital letter. next, the name of the town is mentioned, i-e calder hall, which will also be written in capital letters. in the last,   city name is being used, 'london', which will also be written in capital letters. so option b is the most appropriate one.

can your question and add a list so i can you out?

answer; it can vividly demonstrate product attributes and persuasively explain their corresponding consumer benefits;

ell really, the setting was in franklin and lincoln visits franklin even after he moved to columbus, and he went to school