Find the value of the cones round to the nearest hundredth

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.

Somone me i want to know what 18 hours out of 24 hours in a fraction

The quadratic function h(t)=-16.1t^2+150 choose the graph representation