29-01-2016
Mathematics

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if r(x)=120+18x-3x^2 what is r(2)

Respuesta :

29-01-2016

[tex]r(x)=120+18x-3x^2 [/tex] (replace x with 2)
[tex]r(2)=120+18(2)-3(2)^2 [/tex]
[tex]r(2)=120+18(2)-3(4) [/tex]
[tex]r(2)=120+36-12 [/tex]
[tex]r(2)=144[/tex]
answer

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