William purchased 76.9 feet of fencing for his back yard. He realized after measuring, that he still needed an additional 25.7 feet of fencing. How many feet of fencing does William need in all?

William needs 102.6 fencing in all because 76.9 plus 25.7 equals 102.6, 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.