Mary purchased 4 tires by mail order. She paid $63.80 per tire plus $4.20 per tire for shipping and handling. There is no sales tax, because the tires were purchased out of state. She also had to pay $7.41 per tire for mounting and balancing. At a local store, Mary's total for the 4 tires with mounting and balancing would be $356 plus 6% sales tax. How much did Mary save by purchasing the tires through the mail?

What is the size of the matrix resulting from

Now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

Identify the function that contains the data in the following table: x     -2         0         2         3         5     f(x)     5         3         1         2         4     possible answers: f(x) = |x| + 1 f(x) = |x - 2| f(x) = |x - 2| - 1 f(x) = |x - 2| + 1