If x=-3, calculate the value of 2x squared -5
explain how to do it .

The length of a rectangular piece of land is 92 yards more than three times its width. the perimeter is 760 yards. find its dimensions.

Mrs. gehrke said cheddar weighs 16.8 pounds. he actually weighs 15.2 pounds. what is the percent error?

According to the data set, where should the upper quartile line of the box plot be placed?