Question

A food packet is dropped from a helicopter and is modeled by the function f(x) = -12x2 + 19200. The graph below shows the height f(x), in feet, of the food packet at different times x, in seconds:

Answer 1

Use the graph to determine the reasonable domain of f(x) based on the context.

A) All real numbers
B) x < 19200
C) -40 < x < 40
D) 0 < x < 40

Answer 2

D) to save time if you just want the answer. Need concept? make question. Don't need, it's ok to me. :)