The two-way frequency table below shows the preferred communication method of employees at a company, based on years of employme
nt with the company. Text Message Instant Message Phone Call Email Total 0 to 7 years 36 49 8 21 114 8 or more years 12 22 19 43 96 Total 48 71 27 64 210 What percentage of employees with 8 or more years at the company reported that email is their preferred method of communication? A. 44.79% B. 20.48% C. 48.84% D. 67.19%
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If you have 2 functions, f(x) and g(x), you would find f(g(x)) and g(f(x)). If, after you simplify both and you end up with just "x" as the answer, they are inverses of each other. For example, f(x) = 3x - 2 and g(x) = (x+2)/3
f(g(x)) takes the g function and plugs it into the x in the f function, like this:
![f(g(x))=3[ \frac{(x+2)}{3} ]-2](https://tex.z-dn.net/?f=f%28g%28x%29%29%3D3%5B%20%5Cfrac%7B%28x%2B2%29%7D%7B3%7D%20%5D-2%20)
cancel out the 3's to get
f(g(x))=(x+2)-2 which is just x. Now do it the other way: g(f(x))
![g(f(x))= \frac{[(3x-2)+2]}{3}](https://tex.z-dn.net/?f=g%28f%28x%29%29%3D%20%5Cfrac%7B%5B%283x-2%29%2B2%5D%7D%7B3%7D%20)
3x-2+2 is 3x, so we have
See?
f(g(x)) takes the g function and plugs it into the x in the f function, like this:
cancel out the 3's to get
f(g(x))=(x+2)-2 which is just x. Now do it the other way: g(f(x))
3x-2+2 is 3x, so we have
See?