Answer:
Is this a question??
Step-by-step explanation:
Answer:
10 if there is an error in the question (and of the pizza for dinner.)
or 20
Step-by-step explanation:
Just add what he ate for lunch and dinner
It never said how he cut his pizzas. Also it never said if he finished it or not.
Answer:

Step-by-step explanation:
We are to determine which of these expressions are equivalent to: 




Therefore, the two equivalent expressions are:
