A rocket is shot straight up into the air. If f (t) represents the height in feet of the rocket at time, t, seconds and g (t) is a constant function that represents the height of a platform, what situation can be described by (f + g) (t)? Include a description of the domain of (f + g) (t).
The expression (f + g) (t) represents the total height of the rocket from the ground level at time t, taking into account both the height of the rocket and the height of the platform.
The domain of the function (f + g) (t) would be all real numbers greater than or equal to 0, as time cannot be negative and the rocket's height will always be greater than or equal to 0.