
Solve for x: 
Answer: 
1. 

ANSWER:

• Isolate the log
expression
• Choose base 10 to correspond with log
(base 10)
• Apply composition of inverses and
solve. 

2.


ANSWER:

• Remember that e^{x}
and ln x are inverse functions. 

3. 

ANSWER:



4. 

ANSWER:

• Isolate the logarithmic
expression first. 

5. 

ANSWER:

• Use the log property
to express the two
terms on the left as a single term.•
Remember that log of a negative value is not
a real number and is not considered a
solution. 

6. 

ANSWER:


7. 
Using
your graphing calculator, solve for x to the
nearest hundredth.
Method 2:
Place the left side of the equation into Y_{1}
and the right side into Y_{2.}
Under the CALC menu, use #5 Intersect to
find where the two graphs intersect.


ANSWER:
Method 1:
Rewrite so the equation equals zero.
Find the zeros of the function.
Both values are solutions, since both values allow
for the ln of a positive value. 