Answer:
The owner makes $2 in sales per customer 
Note: The "Amount of sales" label of the question is phrased poorly. s could be better labeled "profit from sales" or at least "Amount made from sales", etc.
Step-by-step explanation:
If you logically think about how the answer (now that you know it) relates to the question, it should make simple sense.
i.e. if you consider the first column where $24 is made from 12 customers, and divide the $24 made by the 12 customers, you'll see that each customer spends $2.
 
        
                    
             
        
        
        
9514 1404 393
Answer:
   1. (256/3)π ft³
   2. 33.49 ft³
Step-by-step explanation:
1. Put 4 ft into the formula where r is, then simplify.
   V = (4/3)π(4 ft)³ = (256/3)π ft³
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2. The radius is half the diameter, so is 2 ft. Put that in the formula, along with the value for π, and do the arithmetic.
   V = (4/3)(3.14)(2 ft)³ ≈ 33.49 ft³
 
        
             
        
        
        
Answer:
explanations: we multiply with a rational surd
(x-9)*√(x+9)/(√(x-9)*√(x+9)
=(x-9)√(x+9)/

B.( x-9)/√x+3 =( x-9)*(√x-3)/(√x+3)*(√x-3)
= (x-9)*(√x-3)/x-9
=√x-3
 
        
             
        
        
        
Step-by-step explanation:

 
        
                    
             
        
        
        
Answer:
b) B and D and c) A and C
Step-by-step explanation:
The hypotheses would be:

(Right tailed test at 5% level)
Sample proportions are
Sample              A                 B                C                 D
Success            31               34               27               38
Proportion p     0.775         0.85            0.675          0.95
Std error
(sqrtpq/n)          0.066        0.056          0.074          0.034
p diff
p-0.75               0.025        0.10             - 0.075        0.20
Z stat                  
p diff/SE            0.0757       1.77                 1.01          5.80
p value               0.469       0.038             0.156       0.000001
we find that p value is more smaller than alpha, the more accurate the alternate hypothesis.
b) Only B and D provide against the null.  Because p <0.05
c) A and C provide no evidence for the alternative because p >0.05