Paul volunteered at the senior center for 3 hours on Saturday and 5 hours on Sunday. How many hours did Paul volunteer at the senior center on both days? O A. 9-1 hours O 7 / 1 B. 9 hours O C. 830 hours O D. 8 hours​

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?

How do i do this activity, is appreciated

What is the solution to the equation below? 3/x-2+6=square root x-2 +8