log 0.85^3 is not a valid expression in logarithm form.
If you meant to find the logarithm of 0.85^3, you would write it as log(0.85^3) = 3 log(0.85).
To find the value, you would need to use a calculator or logarithm tables to determine the logarithm of 0.85, and then multiply it by 3.
Log 0.85^3
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