Choose a number line below to model the situation: After eating a 100-calorie snack, Mark exercised to burn 100 calories.

A horizontal number line is shown with labels at 0, 100, and 200. A blue arrow (labeled eats 100-calorie snack)begins at 0 and ends at 100. A red arrow (labeled burns 100 calories) begins at 100 and ends at 200.
A horizontal number line is shown with labels at 0, 100, and 200. A blue arrow (labeled eats 100-calorie snack) begins at 0 and ends at 100. A red arrow (labeled burns 100 calories) begins at 200 and ends at100.
A horizontal number line is shown with labels at negative 100, 0, and 100. A blue arrow (labeled eats 100-calorie snack) begins at 0 and ends at 100. A red arrow (labeled burns 100 calories) begins at 0 and ends at negative 100.
A horizontal number line is shown with labels at 0 and 100. A blue arrow (labeled eats 100-calorie snack) begins at 0 and ends at 100.A red arrow (labeled burns 100 calories) begins at 100 and ends at 0.