algebra

Silver is liquid for Celsius temperatures C such that 960.8 degrees (less than or equal to) C < 2180 degrees. Find such an inequality for for the corresponding Fahrenheit temperatures.

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  1. C = 5/9 (F-32)
    so, now you have

    960.8 <= C < 2180
    960.8 <= 5/9 (F-32) < 2180
    1729.44 <= F-32 < 3924
    1761.44 <= F < 3948

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