Answer:
Option C: X + 860 = 1250
Step-by-step explanation:
Given that:
This month commission: $1250
As said that last month commission is $860 more than $1250
So if last month commission is X, The equation will be:
X = $1250 - $860
OR
X + $860 = $1250
By calculating the last month commission will be $390
i hope it will help you!