I don't understand this question! Please help me!!

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.

Is a square always, sometimes, or never a parallelogram

Write the equations in logarithmic form 7^3=343