Answer:
-10.
Step-by-step explanation:
-7.94 can be estimated as -7.9, and -2.31 as -2.3.
Hence, the end result is -7.9 - 2.3 = -10.2.
Therefore, -10 is a good estimate.
Hope this helped!
-4
Parallel lines have the same slope
If the green line has a slope of -4, then the red line has a slope of -4
i think its b
4