Answer:
Step-by-step explanation:
Background info: If e^x = b, then x = ln b.
The given 10e2x+1 = 900 can be simplified by dividing both sides by 10:
e^(2x+1) = 90
Taking the natural log of both sides (using the property given above), we get:
2x + 1 = ln 90
Solving for 2x:
2x = ln 90 - 1
Solving for x:
ln 90 - 1
x = ----------------
2
