Question

A food packet is dropped from a helicopter and is modeled by the function f(x) = -15x^2 + 6000. The graph below shows the height f(x), in feet, of the food packet at different times x, in seconds:

graph of function f of x equals 6000 minus 15 multiplied by x squared

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

x ≤ 6000

0 ≤ x ≤ 20

-20 ≤ x ≤ 20

all real numbers