Use the properties of logarithms to evaluate the expression.
To simplify this expression, use the logarithmic property log bbx=x. Check to see if the given expression matches the form log b bx.
The base of the given logarithmic expression is 10.
To simplify the logarithm, base 10, of 10 to a power, use the above logarithmic property. In the expression log 1015, b = 10 and x = 15.
Log 1015 = 15