Perform the indicated operation. Be sure the answer is reduced. k+5/k^2 +3k - 10 ÷ 7k +14/4 - k^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.

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500