Logarithims

NoGoodAtMath

New member
Joined
May 2, 2013
Messages
35
The directions say to solve the equation. Write the solution set with the exact solutions. Also give approximate solutions to 4 decimal places.

log8(3y-5)+10=12

I'm not sure how to start this problem. The way I attempted this problem was to subtract 10 from both sides, which gave me log8(3y-5)=2. Then I moved the log8 and used it like this (3y-5)^8=2. But I don't think any of that is correct. Could someone help? Thanks.
 
The directions say to solve the equation. Write the solution set with the exact solutions. Also give approximate solutions to 4 decimal places.

log8(3y-5)+10=12

I'm not sure how to start this problem. The way I attempted this problem was to subtract 10 from both sides, which gave me log8(3y-5)=2. Then I moved the log8 and used it like this (3y-5)^8=2. But I don't think any of that is correct. Could someone help? Thanks.
You have it backwards, it is 8^2=3y-5. Continue from here.
 
Top