Molly and her sister Kayla leave their home at different times to travel back to their respective colleges. Molly travels at 50 mph for M hours, and Kayla travels at 60 mph for K hours. After 6 hours, they are 500 miles apart. Which system of linear equations can be
used to determine the driving time of each sister?

Then why is the question on here if you know the answer

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.

The answer is that the rate of change is $50 per 1 monthhope this ; )