Please solve for f(x)

User Generated

ynratroergfba

Mathematics

Description

Solve for f(x)

x           f(x)

100       ?

60       24

45       18

30        12

How do you solve for ?  Thanks! 

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Explanation & Answer

Compare x and f(x) values. The ratio of f(x) and x is the same.

That is  24/60 = 2/5

Similarly 18/45 = 2/5

In other words , 18 = (2/5) *45

So f(x ) =  (2/5) * x

So f(x) when x = 100 is (2/5) * x = 40



Please let me know if you need any clarification. I'm always happy to answer your questions.


Anonymous
Excellent resource! Really helped me get the gist of things.

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