F(x)=2x^2 -5 , simplify f(x+h)/h , where h≠0

Consider the function represented by the equation 1/2 j + 1/4 k equals 3 which shows the equation written in function notation with j as the independent variable

Witch represents the inverse of the function f(x)=1/4x-12

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?