one is 4 miles south of the intersection and is moving at a constant speed of 20 mph. at the same time, the other car is 1 mile east of the intersection and is moving at a constant speed of 30 mph.
Express the distance,d, between the cars as a function of time, t. (hint: at t=0, the cars are 4 miles south and 1 mile east of the intersection respectively.)
Express the distance,d, between the cars as a function of time, t. (hint: at t=0, the cars are 4 miles south and 1 mile east of the intersection respectively.)