I think your answer would be D-12
Answer:

Step-by-step explanation:

Answer:
C. f(x)=-2x^3-2x^2+12x
Step-by-step explanation:
Let X be the weekly incomes of a large group of executives. The weekly incomes of a large group of executives follows Normal distribution with mean $2000 and standard deviation $100.
μ =2000, σ =100
We have to find z score for income $2100 i.e x=2100
Z = 
= 
Z = 100/100
Z = 1
The z score for income $2100 is 1
Answer:
The increase in the number of wins (or amount of change) =6−4=2
Percentage increase
=
original amount or base
amount of change
×100
=
4
2
×100
=50%