Answer:
A. coefficient, operator, variable
Explanation:
A. They tie empty barrels to the animals so they can float to the shore.
I remember in the movie, the pig, snorting loudly, swimming towards shore with a barrel tied around him. Lol luv that part!!! (:
Labor-saving devices are inventions that reduce the time and effort needed to perform or complete a task. Farm equipment, home appliances and construction equipment are examples of mechanical inventions that save time and physical labor.
