Find the difference between 900 and 247

The number of revolutions of two pulleys is inversely proportional to their diameters. if a 24-inch diameter pulley making 400 revolutions per minute is belted to an 8-inch diameter pulley, find the number of revolutions per minute of the smaller pulley.

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?