select all the correct answers.

Carrie drew some nonlinear graphs for some real world scenarios. Which of the following scenarios could she have drawn a graph for?
A machine can bottle 1,800 bottles of soda every hour.

A beetle population, first recorded at 10,000, has been declining over the last few years due to a pesticide. Each year, there are half as many beetles as the year before.

A tree frog population, which started at 2, doubles every three weeks.

A window washer determines his horizontal distance from a 40-foot flag pole when washing the windows on one side of a 40-foot building to be 500 feet.

The correct answers are:

- A beetle population, first recorded at 10,000, has been declining over the last few years due to a pesticide. Each year, there are half as many beetles as the year before.
- A tree frog population, which started at 2, doubles every three weeks.
- A window washer determines his horizontal distance from a 40-foot flag pole when washing the windows on one side of a 40-foot building to be 500 feet.