C it’s 366 cm that’s how you would know the rectangular board
The number is 18
hope this helps
Answer:
39/25
Step-by-step explanation:
i use a very good app to find the answer
2b^2 + 81/2 b + 4
basically 2b^2 + 16b + 49/2 b + 4
= (2b^2) + 16b+49/2b) + (4)
= 2b^2 + 81/2 b + 4
