Answer:
x = 4y+28
Step-by-step explanation:
x/4 -7 = y
Solve for x
Add 7 to each side
x/4 -7+7 = y+7
x/4 = (y+7)
Multiply each side by 4
x/4*4 = 4(y+7)
x = 4y+28
Can u explain it little clearer, do u mean all the fives?
Answer:
Following are the responses to the given question:
Step-by-step explanation:
Level of Significance,
Sample Size,
Sample Proportion,
![z -value = Z_{\frac{\alpha}{2}} = 1.960 \ \ [excel formula =NORMSINV(\frac{\alpha}{2})]](https://tex.z-dn.net/?f=z%20-value%20%3D%20%20%20Z_%7B%5Cfrac%7B%5Calpha%7D%7B2%7D%7D%20%3D%20%201.960%20%20%5C%20%5C%20%20%5Bexcel%20formula%20%3DNORMSINV%28%5Cfrac%7B%5Calpha%7D%7B2%7D%29%5D)
Standard Error
margin of error
When
Confidence Interval
Interval Lower Limit
Interval Upper Limit 
we use the rectangle rule
96-92=4 parts of 92 octane
98-96=2 parts of 98 octane
4x+2x=12
6x=12
x=2
4x=8 liters of 92 octane
2x=4 liters of 98 octane
14850 is the average profit
and 18000 is the charge of $40
so 18000-14850 is your answer