An equation is shown. What values of x makes the equation true?
5x + 3x = 5x + 15/2

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.

What kind of bond pays interest which is exempt from tax?

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36