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Graphing, Substitution, Elimination

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Please set-up the system described below, justify which method you would use to solve, by graphing, substitution, or elimination then solve. 

An apartment building contains 50 units. The one-bedroom units rent for $425 per month and the two-bedroom units rent for $550 per month. When the building is entirely rented, the total monthly income is $25,000. How many apartments of each type are there?

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Solution Summary

Graphing, Substitution, Elimination are considered.

Solution Preview

Let the number of one-bedroom apartments be x and two-bedroom apartments be y.

Then equations will be

x + y = ...

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