Towns A and B are located 6 miles and 3 miles,
Chapter 1, Problem 1.10.46(choose chapter or problem)
Towns A and B are located 6 miles and 3 miles, respectively, from a major expressway. The point on the expressway closest to town A is 12 miles from the point on the expressway closest to town B. Two new roads are to be built from A to the expressway and then to B. Express the combined lengths of the new roads, as a function of x as shown in the figure.
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