Y/x=k
when y=9, then x= -3
9/-3=-3
⇒ k= -3
Answer:
A. 
Step-by-step explanation:
We want to find the Z-score of
if the population mean is
,and the population standard deviation is
.
We use the formula:

We substitute the values to obtain:



The correct answer is A.
Answer:
4x^2+6x+2
Step-by-step explanation:
Answer:
1) undefined
2) 0
Step-by-step explanation: