I did all the sample questions in class but they were nothing like the homework questions. Please answer any if you can

The sample questions didn't even have logs so I'm not sure how to do it with the log.

The questions asks me to: State the transformations applied to the following equation:

y=log_5x (log with base of 5 times variable x)

a) y=-log_5x

b) y=log_5(-x)

c) y=-log_5(-x)

I understand what is happening visually, but I don't know how to describe it verbally.

also I have this equation: y=-log_5(-x)

would the inverse be y=log_5(-x)

or would I also need to modify the variable... y=log_(x)?

The next is given the equation:

y= - 1 / 4 [ ( 2 ) ^ x - 4 ] + 5

Include a table and describe its features...

the sample questions were nothing like this one, didn't have a variable near the exponent which really throws me off

and finally: Solve 3^x= 7^2 using interpolations and logarithms .. this one im completely lost on