Answer:
B. 0.83
Step-by-step explanation:
I calculated it logically
21/7= 3
(-1, 5)
3 [x + y = 4]
3x + 3y = 12
- 3x + 7y = 32
-4y = -20
y = 5
x + 5 = 4
x = -1
The answer is 45 ------------------------------------------------------------