Answer:

Step-by-step explanation:

Answer:
287 books
Step-by-step explanation
there was already 239 books. when the problem mentoins that Mary ADDS MORE books to the shelf, the operation is addition.
239+48=287
Answer:
Circle with center (8,2), radius=3
Step-by-step explanation:
x=8
y=2
r=3
Answer:
C and A
Step-by-step explanation:
C and A are correct answers