Left side: 63, 72, 16 right side: 36, 4, 35
Answer:
its 4
Step-by-step explanation:
a 1 = 3 , a n = a n - 1 + 2
because if you aply this to the shapes that you see at problem 21 you will see that it meaches them
Answer: b commutative property
Step-by-step explanation: idid the test and i got it right