Changing the base changes the log by

true
a multiplicative constant.
false
an additive constant.
false
an unpredcitable amount.
It changes by a multiplicative constant.
The log of (AB) equals

false
log(A) x log (B)
true
log(A) + log(B)
log(A) + log(B)
The log base 10 of 10,000 is

4
0.001
The answer is 4 since 10 to the fourth power equals 10,000.
If the price of food goes up 5% a year then the increase in log(dollars) will

true
be the same every year.
false
will increase over years.
false
will decrease over years.
It will be the same every year. The numbers 100, 105, 110.25 increase 5% each step in the sequence. The logs (base 10) of these numbers are 2.000, 2.021, 2.042 and are increasing at the constant amount of 0.021.