AB is horizontal. The slope of a horizontal line is zero.
Answer:
C. φ
Step-by-step explanation:

Thus
can replace x
It was 6 each because 1,260 divided by 210 is 6 and PLEASE MARK BRAINLIEST
The major thing that differentiate microeconomics from macroeconomics is the object of study. Microeconomics refers to the study of economics at individual, group or business level while macroeconomics involves the study of economics on the national scale, that is the study of the economy of a nation. The economics of a nation is the combination of all the individuals, businesses, households, etc in a country.