(b) $f(4) =$ help (numbers)

Which of the statements best explains the meaning of $f(4)$?
A. The side length of a square of perimeter $P$
B. The area of a square of side length 4
C. The side length of a square of area 4
D. The perimeter of a square of side length 4

(c) $f^{-1}(32) =$ help (numbers)

Which of the statements best explains the meaning of $f^{-1}(32)$?
A. The side length of a square of perimeter 32
B. The area of a square of side length 32
C. The side length of a square of area 32
D. The perimeter of a square of side length 32

(d) Find a formula for the inverse function.
$f^{-1}(P) =$ help (formulas)