Question 940744
Use the definition of logarithm to simplify each expression.
----
Comment:: log mean "exponent".
----- 
log10 10 means "the exponent of 10 that gives you 10"
Ans: 1
-------------------
log10 1,000 means "the exponent of 10 that gives you 1000"
Ans: 3
---------------------- 
log10 10−4 the -4 is to the -4 power
means "the exponent of 10 that gives you 10^-4
Ans: -4
------------------
cheers
Stan H.
----------------