24. Katie ordered a wedding cake with a volume of 1,200 in.3. She knows that the amount
of cake each guest will get is inversely
proportional to the number of people she
invites. Write an equation to model this

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?

Which of the following expressions is equal to 2x^2+8

20 solve 2(4 x + 3) < 5 x + 21. a) { x | x < 9} b) { x | x > -5} c) { x | x > -9} d) { x | x < 5}