Answer:
Parabola 
Step-by-step explanation:
We are given that a function 

The given function is an equation of parabola along y- axis.
General equation of parabola along y- axis  with vertex (h,k) is given by 


Compare it with given equation then we get 
h=5, k=3
Vertex of given parabola =(5,3)
Substitute x=0 then we get 

y-intercept of parabola is at (0,28).
 
        
                    
             
        
        
        
Answer:
The expression
1
÷
1/4
is given. Give a real-life application to explain this expression and then simplify it.
Given a life expression to solve this, when one divide 100 pieces of pencil by 25 which is 1/4 of the entire pencil. 
1/1/4=1 x 4/1
=4
Step-by-step explanation:
divide 1 by 1 over 4, then using cross multiply
then we have 1 multiply 4 divided by 1
4 is the final answer
 
        
             
        
        
        
Step-by-step explanation:
here will take the earth's surface as 0.
hence,
the first hole that Sally dug is 5 feet below the surface making its integer -5
the second hole Sally dug was 8 feet below the surface making its integer -8
therefore, the roses are closest to the surface.
 
        
             
        
        
        
Answer:
 
So then the minimum sample to ensure the condition given is n= 38
Step-by-step explanation:
Notation
 represent the sample mean for the sample
 represent the sample mean for the sample  
 population mean (variable of interest)
 population mean (variable of interest)
 represent the population standard deviation
 represent the population standard deviation
n represent the sample size  
ME = 4 the margin of error desired
Solution to the problem
When we create a confidence interval for the mean the margin of error is given by this formula:
 (a)
    (a)
And on this case we have that ME =4 and we are interested in order to find the value of n, if we solve n from equation (a) we got:
 (b)
   (b)
The critical value for 96% of confidence interval now can be founded using the normal distribution. The significance is  . And in excel we can use this formula to find it:"=-NORM.INV(0.02;0;1)", and we got
. And in excel we can use this formula to find it:"=-NORM.INV(0.02;0;1)", and we got  , replacing into formula (b) we got:
, replacing into formula (b) we got:
 
So then the minimum sample to ensure the condition given is n= 38