SOLUTION: I'm still trying to figure out exactly how logarithms work...and I don't quite understand the way my math book explains it. Anyhow, I have this problem: "Use a calculator to write

Question 1100118: I'm still trying to figure out exactly how logarithms work...and I don't quite understand the way my math book explains it. Anyhow, I have this problem: "Use a calculator to write 0.000715*10^-4 as an exponential expression whose base is 10. Then use logarithm notation to make the same statement." The answers my answer book provides are 10^-7.15 and log base 10 7.15 *10^-8=-7.15. What is the correct process to get the answers? I would be really grateful if someone would explain to me the hows and whys of solving this problem. Thank you!
Answer by josgarithmetic(39626) (Show Source): You can put this solution on YOUR website!
Now done in earlier post with steps shown. Except for slight difference in accuracy, the answer there is the same as your book's.
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