Two cars are traveling at 40 and 50 miles per hour, respectively. if the second cars out 5 miles behind the first car. how long will it take the second car to overtake the first car.

Hello There,

distance = rate x time 
5 + 40x = 50x 
5 = 10x 
x = 1/2 hr

Hope this helps

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.