0.019 is the correct answer. I hope this is the answer you are looking for! :)
Option C: The solution set is 
Explanation:
The expression is 
Now, let us find the solution set.
Switch sides, we get,

Dividing by 2 on both sides, we have,

Thus,
Hence, the above expression becomes,

Simplifying, we get,

Applying the log rule, we get,

Simplifying, we have,

Applying the log rule, we have,

Thus, the solution set is 
Hence, Option C is the correct answer.
5x-40 if yo are trying to simplify it
4/3 in simplest form is 4/3 but in decimal form it would be 1.33333
hope this helped, please mark brainilest :)
For #1 the answers are
69 degrees
155 degrees
86 degrees
335 degrees
249 degrees