The long-run average total cost curve Multiple Choice displays declining unit costs so long as output is increasing. indicates the lowest unit costs achievable when a firm has had sufficient time to alter plant size. has a shape that is the inverse of the law of diminishing returns. can be derived by summing horizontally the average total cost curves of all firms in an industry.

answer; communities of interest; i believe this is correct, plz check first good luck;

among other factors, composers started writing dynamic markings in their scores because "new instruments allowed for more dynamic ranges and contrast."

dynamics allude to the loudness or softness of music. dynamics offer an approach to demonstrate articulation in sheet music. they to drive the enthusiastic substance of music through volume and force. maybe you could alter both the volume and the shading profundity on your screen at the same time. we can likewise think about the force side of elements as the quality of a note. a few notes are intended to be played delicately and gently, while others are intended to be played all the more firmly.  

some dynamics markings have a letter 'm,' which remains for mezzo, signifying 'medium.' so a mezzo piano unique stamping resembles this (mp) and intends to play medium calm, while a mezzo specialty dynamic resembles this (mf) and intends to play medium loud.