Khi hệ số co dãn của cầu theo thu nhập âm thì hàng hóa đó là:A. Hàng hóa thứ cấpB. Hàng hóa thiết yếuC. Hàng hóa cao cấpD. Hàng hóa độc lập

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

What is the equation of the line in point-slope form? y+ 4 = 1/2(x+4) y-4 = 1/2(x + 4) y-0 = 2(x - 4) y-4 = 2(8-0)

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4