Help me please, I really need it

A OR C

Step-by-step explanation: I think it is A because in the question it says y=3

then y=ax²+b and on the A) it says a= -2 and b=2 OR the answer might be C) because it says ax² and a=2

im sorry if both of these are wrong and im sorry if you don't understand what i mean but i hope i helped you . :)

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870