You can put this solution on YOUR website! This is how to solve your question:
1-Find the inverse of f(x) = 4 - 3x.
2-Evaluate THE INVERSE at the point x = -41.
Can you take it from here?
NOTE: f^(-1)(-41) is read: "THE INVERSE OF f AT -41." The negative 1 has nothing to do with negative exponents or the exponential function. Keep that in mind.