1.50 pounds.
(dont have pound symbol, only $)
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.
Hey there! :D
Find 10% of 85.
10%=.10
85*.10= 8.5
Add that to 85.
85+8.5= 93.5
We could also see if this 10% error is in the other direction.
85-8.5= 76.5 <== this is not an answer choice
So, we know it must be "A" 93.5 C
I hope this helps!
~kaikers
Y = 5x because 5 times the x number ( for ex. 12) is equal to the y number (60)