Correct me if im wrong but the answer is (B) hope this helps!

means there exists an integer

such that

. We can divide both sides by

because

. This implies

for some integer, which is identically

.
Answer:
15.20,15.50
Step-by-step explanation:
The square will have area
.. (9 cm)^2 = 81 cm^2.
The two triangles together will have area
.. (9 cm)*(12 cm) = 108 cm^2.
The sum of the areas of those three shapes is
.. 81 cm^2 +108 cm^2 = 189 cm^2