Answer:
![{f}^{ - 1} (x) = 9x + 18](https://tex.z-dn.net/?f=%20%7Bf%7D%5E%7B%20-%201%7D%20%28x%29%20%3D%209x%20%2B%2018)
Step-by-step explanation:
![f(x) = \frac{1}{9}x - 2](https://tex.z-dn.net/?f=f%28x%29%20%3D%20%20%5Cfrac%7B1%7D%7B9%7Dx%20-%202)
![y = \frac{1}{9} x - 2](https://tex.z-dn.net/?f=y%20%3D%20%5Cfrac%7B1%7D%7B9%7D%20x%20-%202)
![x = \frac{1}{9}y - 2](https://tex.z-dn.net/?f=x%20%3D%20%20%5Cfrac%7B1%7D%7B9%7Dy%20-%202)
![x + 2 = \frac{1}{9}y](https://tex.z-dn.net/?f=x%20%2B%202%20%3D%20%20%5Cfrac%7B1%7D%7B9%7Dy)
![9x + 18 = y](https://tex.z-dn.net/?f=9x%20%2B%2018%20%3D%20y)
![{f}^{ - 1} (x) = 9x + 18](https://tex.z-dn.net/?f=%20%7Bf%7D%5E%7B%20-%201%7D%20%28x%29%20%3D%209x%20%2B%2018)
For this case you can solve the problem by applying a simple rule of three in which we have
520 ---> 100%
800 ---> x
Clearing x we have
x = (800/520) * 100 = 154%
the percentage increase in cost was
154-100 = 54%
answer
the percentage increase in cost was 54%
Answer:
AB = 5
Step-by-step explanation:
The side opposite the 30 degree angle will have the shortest length. The side opposite the 60 degree angle will be √3 times as long, and the side opposite the 90 degree angle will be twice as long.
In this case we just divide 10 by 2
the SAS similarity theorem