Answer:
B) 4
Step-by-step explanation:
Answer:
yessss that's correct!
Step-by-step explanation:
An isolated system is a thermodynamic system that cannot exchange either energy or matter outside the boundaries of the system. An isolated system differs from a closed system by the transfer of energy. Closed systems are only closed to matter, energy can be exchanged across the system's boundaries.
Ann-x
Cori-3x
3x+x=124
4x=124
divide both sides by 4
x=31 now plug it in and you get
Ann-31
Cori-31×3=93
Ann spent 31$
Cori spent 93$
Answer:125
Step-by-step explanation: