Kong took  15%  fewer seconds than nolan took to complete his multiplication timed test. kong took  85  seconds.  how many seconds did nolan take?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.