Question

Use a scientific calculator to evaluate log 32.5 (round to the nearest hundredth).

a.2.51
b.3.48
c.32.5
d.1.51

Answer 1

All you need to do is use a calculator.
If you don't have a calculator, you can figure out the answer a different way, assuming one answer is correct.

Log means logarithm base 10.
The log of x is what power do you raise 10 to to get x.
The log of 1 is 0 since you raise 10 to the 0 power ot get 1.
The log of 10 is 1 since you raise 10 to the 1 power ot get 10.
The log of 100 is 2 since you raise 10 to the 2 power to get 100.
The log of 1000 is 3 since you raise 10 to the 3 power to get 1000.
32.5 is between 10 and 100, so its log has to be between 1 and 2.
There is only one answer that is between 1 and 2, so if we assume that one answer is definitely correct, then the answer between 1 and 2 must be it.

Answer 2

Of course, just using a calculator would have given you the answer much more quickly.