QUESTION 1 1.1.
A quadratic pattern has a second term equal to 1, a third term equal to -6 and a fifth
term equal to -14.
(5)
1.1.1. Calculate the second difference of this quadratic pattern.
(2)
1.1.2. Hence, or otherwise, calculate the first term of the pattern.​

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