PLEASE HELP! What is the standard deviation of the data represented by this normal distribution?

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

The graph below shows the height of a projectile t seconds after it is launched. if acceleration due to gravity is -16 ft/s2, which equation models the height of the projectile correctly?

[15 points]find the quotient with the restrictions. (x^2 - 2x - 3) (x^2 + 4x + 3) ÷ (x^2 + 2x - 8) (x^2 + 6x + 8)