An artist wants to create a rough triangular design using uniform square tiles glued edge to edge. She places 'n' tiles in a row to form the base of the triangle and then makes each successive row tiles shorter that the preceding row. Find a formula for the number of tiles used in the design. (hint: Your answer will depend on whether 'n' is even or odd.)

Once you reach college or university, the level of writing that is expected from you should be quite high. They…

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