OE


Draw a rectangular coordinate system with City A as the origin, i.e., the point (0, 0). So Cam’s home is at (2, 3). Going 3 miles east and then 9 miles north from his home puts Town B at (5, 12). Quantity A is the straight line distance from (0, 0) to (5, 12). Connecting these two points creates the hypotenuse of a 5-12-13 right triangle, so Quantity A is 13, and the answer is choice (B).