To determine how much you should budget for food each month, take the average of the expense over the last several months. If over the last four months you spent $120, $137, $82, and $57 on groceries, how much should you budget for food this month?

please show work

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.