Each side of a square is increasing at a rate of 5 cm/s. at what rate is the area of the square increasing when the area of the square is 81 cm2? cm2/s

I don’t know what the answer is I wish I could help

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.