SOLUTION: Solve for x: a) ln(2x+1)=4 b) e^3x+1+2+7

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Question 1127452: Solve for x:
a) ln(2x+1)=4
b) e^3x+1+2+7
Found 2 solutions by addingup, MathTherapy:
Answer by addingup(3677)   (Show Source): You can put this solution on YOUR website!
solving for ln(2x + 1) = 4
Apply the log rule:
a = log_b(b^a)
4 = ln(e^4)
ln(2x + 1) = ln(e^4)
2x + 1 = e^4
x = (e^4-1)/2 this is your answer
:
Solving for e^3x+1+2+7
add the numbers; 1 + 2 + 7 = 10
= e^3x + 10 This is your answer
Happy learning!
Answer by MathTherapy(10555)   (Show Source): You can put this solution on YOUR website!

Solve for x:
a) ln(2x+1)=4
b) e^3x+1+2+7
a) in an EQUATION, but b) IS NOT!! Plus, b) is missing parentheses, probably. 

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