This is my last question for today

Whats A plus b square plus b square

True of false? green is the most used colors on websites

Why is it so important for art critics to get their reviews published by the media? a. unpublished critics can work only in art galleries, not museums, b. people must be published before they can be accepted into programs to study how to become art critics. o c. once critics' reviews have been published, critics no longer have to promote themselves to become known, o d. if no one has heard of them, no one will care what they have to say about art.

In a paragraph of no less than 125 words, explain the single most important factor involved in advancing american classical music in the twentieth century.