Four pears and one apple cost $2.00. Three pears and four apples cost $1.56. Find what one apple costs and what one pear costs?

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?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)