A road perpendicular to a highway leads to a farmhouse located 11 mile away. (See Figure 9, page 204 of the text.) An automobile traveling on the highway passes through this intersection at a speed of 55mph.55mph.

How fast is the distance between the automobile and the farmhouse increasing when the automobile is 44 miles past the intersection of the highway and the road?

The distance between the automobile and the farmhouse is increasing at a rate of miles per hour.