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Mathematics, 14.05.2021 02:10 jo1720

A 3-D printer builds up layers of materials to make three-dimensional models. Each deposited layer bonds to the layer below it. A company decides to make small display models of engine components using a 3-D printer. The printer costs $800. The material for each model costs $50.How many models must be printed for the average cost to fall to $90?

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