Ihave 4 digits. my 7 is worth 7*1000. my 2 is worth 200. one of my 4s is worth is worth 40. the other is worth 1/10 as much. what number am i ? can u with this question my son does not under stand this.

What is the equation of the following graph in vertex form? parabolic function going down from the left through the point zero comma twelve and through the point two comma zero and turning at the point four comma negative four and going up through the point six comma zero and continuing towards infinity courtesy of texas instruments a: y = (x − 4)2 − 4 b: y = (x + 4)2 − 4 c: y = (x + 2)2 + 6 d: y = (x + 2)2 + 12

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?

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length