Answer:

Step-by-step explanation:
From the question we are told that:
Loudness function 
Sound of a person 
Number of persons talking 
Generally the Relative intensity for 20 people is mathematically given by
Relative intensity for

Relative intensity for

Generally the loudness for 20 people is mathematically given by




Therefore increase in loudness X is given as


Answer:
42, or 42.4 is round to the nearest tenth or 42.43 is round to the nearest hundreths
Step-by-step explanation:
Answer:7
Step-by-step explanation:
Answer: c) The base is 2.
Reason: It is an exponential function because the variable (2) depends on the x.