An MP3 player was reduced from $189.99 to $89.99. Find the percent reduction in price. Round your answer to the nearest tenth of a percent. The reduction in price is %

Find the quotient. 50a2 – 98b2 -5a +7b

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

What is the range of the relation in the table below? x y –2 0 –1 2 0 4 1 2 2 0