I = 7.6*10^(-4) is the given intensity of the sound
Io = 10^(-12), which is a constant usually shown in a table or in your book
Plug in those values to get
B = 10*log(I/Io)
B = 10*log((7.6*10^(-4))/(10^(-12)))
B = 88.808135922808
B = 88.81
Answer: Approximately 88.81 decibels
The answer to this would be D
The periodicity of function is 
<em><u>Solution:</u></em>
Given that we have to find the period of function
<em><u>Given function is:</u></em>

<em><u>Use the below formula:</u></em>

Thus,

Now find the periodicity of cos(x)
We know that,
periodicity of cos(x) = 
Therefore,

Thus the periodicity of function is 
Answer:$7.98
Step-by-step explanation:
$19.95 divided by 2.5 yards
19.98/2.5 =7.98