You are conducting an experiment by drawing 18 marbles from a bag. You randomly selected: 1 blue, 2 yellow, 7 red, 6 green and 2 purple marbles. Find the experimental probability of randomly selecting a red marble.

The graph shows the decibel measure for sounds depending on how many times as intense they are as the threshold of sound. noise in a quiet room is 500 times as intense as the threshold of sound. what is the decibel measurement for the quiet room? 20 decibels28 decibels200 decibels280 decibels