Suppose that the market for computers is dominated by a single firm, like dell, that is able to exert influence over prices and output. this situation violates the perfect competition assumption of:

many buyers and sellers

Explanation:

Based on the information provided within the question it can be said that this situation violates the perfect competition assumption of many buyers and sellers. This is a model that many buyers and sellers in a competitive market agree on a single market price, and that no individual has influence over the price. Therefore if a single company, like Dell in this scenario, is able to influence the price then it is violating this assumption.

a ab

answer: b. false

the staff is a set of five horizontal lines and four spaces which represent a different musical pitch. the lines and the spaces are numbered from bottom to top, the bottom line is the first line and the fifth line is the line on the top. the notes on the top of the staff (fifth line) have a higher pitch than a note at the bottom of the staff.