Write 2.25 as a mixed number and as an improper fraction. write your answers in simplest form.

Because of your favorite lemonade it is $3.84 for 3 gallons. write this as an unit rate

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?

Find the domain and range of the following function f(x) = 51x - 21+ 4