PL HLP Below is the graph of the polynomial function f(x) = -x^3 + x^2 + 6x. What are (is) the approxiamate interval(s) where the graph is decreasing. A.(-∞, -1] B.(-∞, -1], [1.75, ∞) C.[-1, 1.75] D.[1.75, ∞)

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?

Joanie wrote a letter that was 1 1/4 pages long. katie wrote a letter that was 3/4 page shorter then joagies letter. how long was katies letter

In the diagram, bc¯¯¯¯¯∥de¯¯¯¯¯ . what is ce ? enter your answer in the box.