Musicians often described the beat as one of the foundations of all forms and styles of music

Donald has x twenty-dollar bills and 1 ten-dollar bill. how much money does donald have? write your answer as an expression.

Explain why a work of art is considered so valuable and who is affected when a work of art is stolen

Riddle me this: i am first in earth,second in heaven,appear two times in aweekyou can only see meonce in a year, althoughi'm in the middle of sea.what am i?