math(Please help)

1) use the properties of logarithms to simplify the logarithmic expression.

log base 10 (9/300)

log - log 300
log 9 = 2 log 3
log 300 = log 3 + log 100 = log 3+2

I just do not know how to put these together now!

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  1. log base 10 (9/300)
    = log10 (3/100)
    = log10(3) - log10(100)
    = log10(3) - 2

    Further simplification is not possible.

    The numerical value is 0.47712 - 2
    = -1.52288

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  2. log a b * log bc * logc a=1

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