Which is the best estimate for the sum of 2 7/8 + 2 4/5=

Mary works for a company that ships packages and must measure the size of each box that needs to be shipped. mary measures a box and finds the length is 7 inches, the width is 14 inches, and the height is 15 inches. what is the volume of the box? [type your answer as a number.]

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)