Solve the problem.Car A (travelling north at 60 mph) and car B (traveling west at 40 mph) are heading toward the same intersection. Car A is 6 miles from the intersection when car B is 7 miles from the intersection. . Find a formula for the distance between the cars as a function of time, using the parametric equations that describe the motion of cars A and B. Using a graphing utility, find the minimum distance between the cars. When are the cars closest? 
A. d = 
; 2.5 mi; 0.12 min
B. d = 
; 2.5 mi; 7.38 h
C. d = 
; 523.64 mi; 7.38 min
D. d = 
; 2.5 mi; 7.38 min
Answer: D
Mathematics
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