Find the determinant:
3 -7
4. 12

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.

Which of the following describes the symmetry of the graph of y = x3?

Hundred and tens tables to make 430 in five different ways