Consider a contractor who is considering purchasing a compressor for use during heavy demand periods. Local equipment rental firm will rent compressors at a cost of $50/day. Compressors can be purchased for $6000. The difference in operating and maintenance costs between owned and rented compressors is estimated to be $3000/year. Find X, the number of days a year that the compressor is required to justify buying over renting. Use a planning horizon of 5 years, zero salvage values, and 10% MARR.

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Limits

When it comes to calculus, limits are considered to be a very important topic of discussion. The main importance of limit lies in expressing the value of a function as it gets closer to a certain value. Also, limits can help you to understand other topics, such as continuity and differentiability better. In a broader sense, every calculus notion is a limit. Other branches of calculus have also been derived from limits.