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2 December, 02:15

The cost to install a certain kind of floor tile is $20 per square foot. The total cost to install in an x-foot-by-x-foot room is f (x) = 20x^2.

What is a reasonable domain?

How much for an 8-foot-by-8-foot?

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  1. 2 December, 05:25
    0
    x > 0; $1280

    Step-by-step explanation:

    Domain should be x > 0 because length is not negative

    When x = 8

    Cost = 20 (8²) = 1280
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