The puppy no longer greetng Molly when she enters the house is an example of extinction. This is because the puppy lacks motivation to greet her when she enters the house because she does not have treats.
I may be wrong, but this is what I did:
8.9 x 10^5 x 2000 (1 ton is 2000 lbs) x 16 (16 ounces in 1 pound)
=2.848 x 10^10
The answer you are looking for is True.
