The question is “mike purchased 3 dvds and 14 video games for $203. nick went to the same store and bought 11 dvds and 11 video games for $220. how much is each video game and each dvd? ”

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?

How do you find the circumfrance of a circle?

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?