Tammy's take-home pay is $800 a month. she spends 7% of her take-home pay on her cell phone bill. how much is tammy's monthly cell phone bill? a. $76 b. $69 c. $56 d. $109

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?

5(-9w) put expression in distributive property

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps