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    Expressions Represented with Graphs

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    A building block has the dimensions height Xcm, width (3+X) cm, depth Xcm

    What espression, in terms of x, would represent the total surface area (A) of the block? Put the expression into the simplest terms.

    Draw a graph, estimate a value for x, which will give a surface area of 175.5 cm squared.

    Check your extimate of x by solving the equation when A = 175.5

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    Solution Preview

    There are six sides to the block,
    two sides have the area = depth * width (Note: "*" means multiply)
    two sides ...

    Solution Summary

    The expressions represented with graphs are provided. The total surface of the block is found.