For the function f(x)=−10x+155−−−−−−−−−√3, find f(3).

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Step-by-step explanation:

The way the question is written doesn't make sense but your original question (before you edited it) was the following and that is what I am answering:

f(x) = -10x + 155√3      find f(3)

f(3) = -10(3) + 155√3

     =   -30  + 155√3

If you meant to ask for f(√3) then the answer is as follows:

f(√3) = -10(√3) + 155√3

        =  (-10 + 155)√3

        =            145√3