Independent Practice Solve the compound inequality.

–1 < 4m + 7 ≤ 11

A.
2/3 < m < 4 1/2

B.
−1/4 < m ≤ 1

C.
–2 < m ≤ 1

D.
− 2 < m ≤ 11/4

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15

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?

Joseph haydn pet store offers wide variety of leashes for dogs. the store purchases one popular type of leash from its manufacturer for $4.38 each. joseph haydn pets marks up leashes at a rate of 238% of cost. what is the retail price of the popular leash?