We want to find the value for
[tex]\log _425[/tex]
To do that, first let's rewrite this expression as
[tex]\log _425=\log _45^2[/tex]
Using the following property
[tex]\log _ab^c=c\log _ab[/tex]
We can rewrite our expression as
[tex]\log _45^2=2\log _45[/tex]
Using the given value on the text, we get our answer
[tex]\log _425=2\log _45=2\cdot1.2=2.4[/tex]
