# data[].attributes.body
You can't take the log of a negative number, so any solution that would make the expression negative is extraneous.

# data[].attributes.headline
When a common exponential base isn't possible

# data[].attributes.subject
When a common exponential base isn't possible

# data[].attributes.headline
Example - Using Logs to Solve Exponential Equations

# data[].attributes.subject
Example - Using Logs to Solve Exponential Equations