What steps should be followed to solve the inequality -4x < 8. Multiply by -4 on each side and keep the sign.
Divide by -4 on each side and flip the sign.
Multiply by -4 on each side and flip the sign.
Divide by -4 on each side and keep the sign.

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?

For which pairs of functions is (f•g)(x)=12x? f(x)=3-4x and g(x)=16x-3 f(x)=6x2 and g(x)= 2/x f(x)= and g(x) = 144x f(x)=4x and g(x) =3x

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4