The first one is reflexive, which states that anything equals itself.
The second is the commutative property for multiplication, as it states that it doesn't matter what order you multiply the numbers in, the product remains the same :)
The answer is B. If you put the information given into a proportion, you will find that Anthony worked for 7.5 hours. When the problem says that his hourly rate is proportional to Carla's, it means that he gets the same amount of money per hour as she does.
