Answer:
-4
Step-by-step explanation:
if y = -2 then x = 4
what is y when x = 8

Answer:
I am in middle school so I actually don't know the answer
Any of the tens i think (10=60, 20+50, etc.), but i am not too sure what is implied by regrouping. if i am right in thinking this only means "carrying" a digit after adding, then anything that adds up to 70 would work unless the sum of the digits in the ones place exceeded 9.