Answer:
x = 9
Step-by-step explanation:

Subtract 6 from both sides.

Multiply both sides by 3.


Answer: x = 9
Answer:
The answer is B
Step-by-step explanation:
The correct answer would be that it would be more reliable to survey everyone instead of a few because it would only be conformative to those surveyed people’s taste.
Answer:
The total number of marbles in the bag is 50.
Step-by-step explanation:
Here, we have n trials, without replacement. So the hypergeometric distribution is used.
The mean of the hypergeometric distribution is:

In which n is the number of items in the sample, k is the number of items in the population that are classified a success and N is the size of the population.
15 marbles are drawn:
This means that 
A bag contains some number of marbles. It is known that 20 of them are red.
This means that
, since a success is drawing a red marble.
Assuming E(X)=6 red, what is the total number of marbles in the bag?
We have to find N when 
So





The total number of marbles in the bag is 50.
Y = (3x + 11)/2
y(1) = 7
y(2) = 17/2
y(3) = 10
We then plot these values on the x and y axes to obtain the graph.