Samantha is preparing to do a survey of the language classes taken by ninth and tenth graders at her high school. Each student in ninth and tenth grade takes one language class. From school records, she knows there are 158 students in the ninth grade, as shown in the table.

What is the measure of angle afe? 79 81 91 99

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.

Which number line correctly shows 0.8 + 0.3?