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September 2, 2015

Homework Help: math

Posted by lo on Saturday, October 13, 2007 at 9:55pm.

A road perpendicular to a highway leads to a farmhouse located 8 mile away.An automobile travels past the farmhouse at a speed of 80 mph.

How fast is the distance between the automobile and the farmhouse increasing when the automobile is 7 miles past the intersection of the highway and the road?

The distance between the automobile and the farmhouse is increasing at a rate of ___________ mph.

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