i think its computer assembly and repair.
The demand and marginal revenue for a perfectly competitive firm are horizontal , whereas the demand and marginal revenue for monopolists are downward
<h3>What is meant by marginal revenue?</h3>
The increase in revenue that comes from selling one more unit of output is known as marginal revenue. Although marginal revenue can remain constant at a certain level of output, it will eventually start to decline as the output level rises due to the law of diminishing returns. The increased total revenue produced by increasing product sales by one unit is known as marginal revenue and is a key topic in microeconomics.
An individual, group, or business that dominates and controls the market for a particular commodity or service is referred to as a monopolist. Due to the absence of substitute products or services and competition, the monopolist has the ability to command high prices. According to Irving Fisher, a monopoly is a market where there is "no competition," which results in a situation where one person or business is the only supplier of a specific good or service.
Hence, The demand and marginal revenue for a perfectly competitive firm are horizontal , whereas the demand and marginal revenue for monopolists are downward.
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