Answer:
A.1296
Step-by-step explanation:
Replace P with 15:
d = -3(15)^2 + 168(15) - 315
d = -3(225) + 2520 - 315
d = -675 + 2520 -315
d = 1530
B = (c-3a) / 2
subtract 3a from both sides
divide by 2 on both sides
<span>When doing linear regression, if the correlation coefficient is Negative, the slope of the line is Negative .
</span><span>When doing linear regression, if the correlation coefficient is positive, the slope of the line is positive.
So according to above explanation it is TRUE</span>