At a college bookstore, Carla purchased a math textbook and a novel that combined cost a total of $54 ​
​The price of the math textbook, m is $8 more than 3 times the price of the novel, n .
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​Which system of linear equations could be used to determine the price of each book?

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?

Your company withheld $4,463 from your paycheck for taxes. you received a $713 tax refund. select the best answer round to the nearest 100 to estimate how much you paid in taxes.

If you measured the width of a window in inches and then in feet with measurement would you have the greater number of units