The is the radical. Whatever is inside the radical CANNOT be a negative number, so it cannot be less than zero
So, we set up the equation as
1.06y - 0.48 >_ 0
1.06y >_ 0.48
y >_ 0.48/1.06
y >_ 0.453
Note, even though we normally associate y as the variable for the range, in THIS case it is the independent variable and therefore represents the domain.
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