0) A florist sells a dozen roses for $35.40. She sells individual roses for the same unit cost. Write a
equation to represent the relationship between the
number of roses, x, and the total cost of the roses, y.
How much would 18 roses cost?
ir

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?

Match each inequality to the number line that represents its solution

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.