12.1 Sampling, Frequency Distributions, and Graphs A random sample of 40 college professors is selected from all professors at a university. The following list gives their ages.

Construct a​ stem-and-leaf plot for the data. Complete parts a. and b.

a. Determine the leaves for each corresponding stem. Complete the table below.
​(Use ascending​ order.)

Stem: 2, 3, 4, 5, 6

b. what does the shape of the display reveal about the ages of the professors

Find the zeros of each function. f(x) = 6x^2 - 7x - 20

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function.a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog