Mathematics, 21.09.2019 20:20 kaffolter25

Aconstruction firm is trying to decide which of two cranes to purchase. model a costs $100,000 and requires $8,000 a year to maintain. model b has an initial cost of $80,000 and a maintenance cost of $11,000 a year. for how many years must model a be used before it becomes more economical than b?

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