The expression - 300 + 19z represents a submarine that began at a depth of 300 feet below sea level and ascended at a rate of 19 feet per minute. What was the depth of the submarine after 5 minutes?​

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

1.based of the diagrams what is the the value of x? 2.how would you verify your answer for x

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