In Exercise, solve the equation.

ex - 1 = 9

x = ln 10

Step-by-step explanation:

You meant e^x - 1 = 9. Let's isolate e^x, by adding 1 to both sides. We get:

e^x = 10

Now make use of the property ln a = b a = e^b

Then e^x = 10 becomes

x = ln 10