C. you need to find the area and perimeter to find the outside
Let y = f(x)
y = ln(3x)
Exchange place with x and y.
x = ln(3y)
Solve for y.
y = (e^x)/3
Replace y with the inverse notation.
f^(-1) x = (e^x)/3
Done.
Your answer is d. hope this helps
Since angle COB is the central angle of arc CB, the measure of arc CB = 80 degrees