Samantha and derrick went to a local deli for lunch. samantha orders a roast beef sandwich that cost $7.49 tax included and derrick orders a chicken wrap for $6.59 tax included. they want to leave a 20% tip. what is the amount they should leave for a tip?

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