What is her bill? 
 To do this on your own, you round up the amount by 5¢ or 10¢, whichever is closer, and then take 20% of her bill
 Remember to put 20% into the calculator as 0.2 and multiply 0.2 by her bill that has been rounded up
        
             
        
        
        
Let's try plugging in some negative numbers. Let's do x=-1. 5+-1=4. So we know that if we put in a negative number for x, then n will be positive. But what if we do a number greater than -5, because 5+-5=0. So let's try x=-6. So 5+(-6)=-1. Hmm. So here it is. We know that any number under -5 will be positive and any number above -5 will be negative.
        
             
        
        
        
Using the z-distribution, a sample of 142,282 should be taken, which is not practical as it is too large of a sample.
<h3>What is a z-distribution confidence interval?</h3>
The confidence interval is:

The margin of error is:

In which:
 is the sample mean. is the sample mean.
 is the standard deviation for the population. is the standard deviation for the population.
Assuming an uniform distribution, the standard deviation is given by:

In this problem, we have a 95% confidence level, hence , z is the value of Z that has a p-value of
, z is the value of Z that has a p-value of  , so the critical value is z = 1.96.
, so the critical value is z = 1.96.
The sample size is found solving for n when the margin of error is of M = 0.006, hence:





n =  142,282.
A sample of 142,282 should be taken, which is not practical as it is too large of a sample.
More can be learned about the z-distribution at brainly.com/question/25890103
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Answer:
pi*36*10 = 1131 cubic feet
Step-by-step explanation:
MARK AS BRAINLEST!!