Answer:
A, D, E
Step-by-step explanation:
I hope this is correct
(96+92+80+91+86+x)= 90
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6
(445+x)=90
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6
then you multiply 6 on both sides
445+×=540
-445. -445
x= 95
they need a 95 percent to have an average of a 90%.
Answer:
ok
Step-by-step explanation:
Answer:
A. 106
Step-by-step explanation:
Given function that represents the cost of materials to make x shirts,
![f(x) =\frac{5}{6}x+5----(1)](https://tex.z-dn.net/?f=f%28x%29%20%3D%5Cfrac%7B5%7D%7B6%7Dx%2B5----%281%29)
Also, the function for the selling price of x shirts,
![g(f(x))](https://tex.z-dn.net/?f=g%28f%28x%29%29)
Where, ![g(x)=5x+6---(2)](https://tex.z-dn.net/?f=g%28x%29%3D5x%2B6---%282%29)
From equation (1),
![g(f(x))=g(\frac{5}{6}x+5)](https://tex.z-dn.net/?f=g%28f%28x%29%29%3Dg%28%5Cfrac%7B5%7D%7B6%7Dx%2B5%29)
![=5(\frac{5}{6}x+5)+6](https://tex.z-dn.net/?f=%3D5%28%5Cfrac%7B5%7D%7B6%7Dx%2B5%29%2B6)
( From equation (2) )
![=\frac{25}{6}x+31](https://tex.z-dn.net/?f=%3D%5Cfrac%7B25%7D%7B6%7Dx%2B31)
For 18 shirts, i.e. x = 18
The selling price would be,
![g(f(18))=\frac{25}{6}\times 18+31=75+31=106](https://tex.z-dn.net/?f=g%28f%2818%29%29%3D%5Cfrac%7B25%7D%7B6%7D%5Ctimes%2018%2B31%3D75%2B31%3D106)
Option 'A' is correct.