Answer:
Yes you are correct.
Step-by-step explanation:
The best way to check theese types of questions is go back in plug in X with your answer so 88+97+80+90(which is x)=360 then divide by 4 and get 90! So yes you are correct good job!
i think it might be the first or third one
I dont really know how to do this, but I think you have to multiply
Answer: The awnser is A,C,E
I just did it and got it right
its A.........dont u have a calculator
