3 887 860 tonnes of paper were collected last year. Round this number to the nearest million.

The dimensions, in inches, of a shipping box at we ship 4 you can be expressed as width x, length x+5, and height 3x-1. the volume is about 7.6ft^3 find the dimensions of the box in inches. round to the nearest inch

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?