Functions can be represented using equations and graphs
The function that represents the magnitude of an earthquake, R, is [tex]r = \log(0.25a) + 2[/tex]
How to determine the graph of the function
The equation of the function is given as:
[tex]r = \log(a/t) + d[/tex]
From the question, we have the following parameters
t = 4 seconds
D =2
So, the function becomes
[tex]r = \log(a/4) + 2[/tex]
Divide a by 4
[tex]r = \log(0.25a) + 2[/tex]
Next, we plot the graph of the function (see attachment)
Read more about graphs and functions at:
https://brainly.com/question/14323743
