9a. The average precipitation in Portland, Oregon is 35.98 inches. Scottsdale, Arizona has an 1p- average precipitation of 10.32 inches. What is the difference in the two cities average annual precipitation? What is the variable?*

Subtracting is the opposite of adding

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.