Please help! I don't get this at all

Find the measures of the complement and the supplement of each angle, m

F(x) = (x^2 + 3x − 4) and g (x) = (x+4) find f/g and state the domain.

The weights of players in a basketball league are distributed normally. the distance (d) of each player's weight (w) from the mean of 86 kilograms was computed as follows: d = |w - 86| if d is greater than 7 for approximately 5% of the players, what is the approximate standard deviation of the players' weights? a. 1.75 kilograms b. 3.5 kilograms c. 4.3 kilograms d. 7 kilograms