Answer:
The correct set of equations is C.
Step-by-step explanation:
m + n = 32
m = 3n
We have 4n = 32, so n = 8 and m = 24.
Answer: 9 x 
Step-by-step explanation:
4.221 is greater because of the .221
.022 see
It’s eight because 7 can round up so it changed to eight