This is just my homework I don't know who to solve those questions. Cause I missed class last week. Hope you understand. Thank you

7. Write the equation of the following function. 8. Find the inverse for f{x) = 9. Solve for x: a\" " = C 9'3"r 10. Check to see if the following functions are inverses; {(1') = if: and Q\") = tI 11. The normal healing of wounds can be modeled by the function A = A9 9'0-35 ", where A0 represents the original area of the wound and A equals the area of the wound after n days. How long before the wound is 35% of its origi- nal size? 12. Given {(x) = f1 find the difference quotient (and simplify)"\"\";'m