In which of the following numbers does the digit 2 represent tens? *
2517
342
720
518.2

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 least common factor of 6 and 8

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.