Joe leaves an intersection traveling west in his car. He is 20feet from the intersection 4 seconds later. At the same time,Joshua leaves the intersection heading north in his car so that hisposition 4 seconds later is 26 feet from the intersection. If, atthat instant time, Joe's speed is 8 feet per second and Joshuas'speed is 12 feet per second, find the rate at which the distancebetween the two cars is changing to the nearest tenth.
