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If f(x)=3[x] +5, find f(x) if x= 4.3f(x)= -17f(x)= 17f(x)= 20f(x)= -20
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If f(x)=3[x] +5, find f(x) if x= 4.3f(x)= -17f(x)= 17f(x)= 20f(x)= -20

If f(x)=3[x] +5, find f(x) if x= 4.3f(x)= -17f(x)= 17f(x)= 20f(x)= -20-example-1
User Fastec
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1 Answer

1 vote

It is given that


f(x)=3\lbrack x\rbrack+5

Now


\begin{gathered} f(4.3)=3\lbrack4.3\rbrack+5 \\ =3(4)+5 \\ =12+5 \\ =17 \end{gathered}

So the correct answer is f(x)=17

User Pana
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