<span> -4w+8+4w=2+2
</span><span> -4w + 8 +4w = 4
</span> -4w + 8 +4w - 8 = 4 - 8
0w = -4
answer
No solution
Answer:
Option B
Step-by-step explanation:
Given that the regression equation using least squares for test scores and student teacher ratio is
Test Score = 557.8 + 36.42 In (Income).
Say if 1% income is increased.
Let income be 100
New income = 101
Then we have
Test score original =

Test score new income
= 
Increase = 0.362~0.36
Option B is right.