If Scott’s monthly sales stay relatively the same, can he hire an employee with an average monthly salary of $1,000?

If g^-1(x) is the inverse of g (x) which statement must be true

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?

How can i differentiate this equation?