Answer:
I believe it's B.Let me know if it's right,if it not,i'm so sorry
Step-by-step explanation:
Answer: multiply 631.6 by 0.8 = 505.28
I think #1 is -1/2 but im not sure i dont know about the other answers
You can use the calculator or 0^2 is 0 x -3 =0 +7 (0) -4 =-4