Required information Concrete expands both horizontally and vertically over time. An article reports measurements of horizontal and vertical expansion (in units of parts per hundred thousand) made at several locations on a bridge in Quebec City in Canada. The results are presented in the following table. Horizontal 43 Vertical 55 5 18 24 32 10 21 80 58 68 57 69 63 For what horizontal expansion would you predict a vertical expansion of 65 parts per hundred thousand? The required horizontal expansion is 26.55 parts per hundred thousand.

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