Question

Which function is the inverse of f(x)= -x^3 -9?

Answer 1

B.
`\sqrt[3]{-x-9}`

Explanation:

Switch x and y, and then solve for y.

`y = -x^3-9\\x=-y^3-9\\x+9=-y^3\\-x-9=y^3\\\sqrt[3]{-x-9} =y`