Answer:
B
Step-by-step explanation:
To find the value of f(x) at x=-1, we substitute x=-1 and simplify.

f(-1)=2.
Answer B.
B the answer is B
To create a survey you need a common entity linked to a unique feature
With B…he is able to create a table,draw a graph ,a pie chart and do so
1/4=2/8
7/8-2/8=5/8
so 5/8 foot of the board is left
Answer:
a. There's a 95% chance that the true proportion is in the confidence interval.
Step-by-step explanation:
When we want to estimate a property of a population (a population's parameter), without surveying the population, we use samples.
Then, with the information of the samples we can calculate the statistics and infere properties about a population. This inferences obviously came with some uncertainty, depending on the properties of the sample and specially the sample size.
When we talk about confidence intervals, we use the statistic of the sample (in this case, the mean) to estimate a range of values it is expected to find the true mean of the population. The width of this interval depends on the sample standard deviation and the sample size.
The value of the confidence interval (95%, 99%, etc) represent the probabilty that the true mean is within this interval.
Answer:

Step-by-step explanation:
Area of the first level 
Area of the second level 
Total Area of Standing Room 
Since each person will occupy 2.25 square feet.
Number of Persons that will occupy the standing room

Therefore the number of Tickets that should be sold
=Number of seats + Number for standing Room
=180+5967
Therefore, the concert venue should sell 6,147 tickets.