The __________, developed by Margaret Bourke-White, is an assemblage of several photographs into a readable narrative

Who is credited as the first person to use the term "rock and roll" for music that was essentially rhythm and blues?

A) Sam Philips B) Allan Freed C) Elvis Presley D) Bill Haley

Which of the following is the correct chord symbol for this triad?

A. Cb° B. Ebm C. Eb° D. Cm E. Dm