The brick will be painted. Which measure will help the painter know how much paint to buy?
1 answer:
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Since no base is stated, assume base 10
remember
loga-logb=log(a/b)
also
translates to 
and log(a^z)=zlog(a)
log25x-log5=2 means
translates to
simplies to
translates to
expands to
100=5x
divide both sides by 5
20=x
remember
loga-logb=log(a/b)
also
and log(a^z)=zlog(a)
log25x-log5=2 means
100=5x
divide both sides by 5
20=x