The project represented by this network diagram has activity lengths in days and crash costs as shown in the table.The fixed cost for being on site is $450.What is the lowest total completion cost for the project? 
Definitions:
Volatile
Refers to something that is highly unstable and can change rapidly, often used to describe financial markets or chemical substances.
Mainframes
High-performance computers used primarily by large organizations for critical applications, bulk data processing such as census, industry and consumer statistics, enterprise resource planning, and transaction processing.
Supercomputers
Highly advanced computing systems capable of processing vast amounts of data and performing complex calculations at high speeds.
Mac Operating System
The operating system developed by Apple Inc. for its line of Macintosh computers, known for its intuitive interface and reliability.
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