SOLUTION: if f(x)=6x+7 f(r-2) i dont know how to plug in the numbers??

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Question 217859: if f(x)=6x+7
f(r-2)
i dont know how to plug in the numbers??
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
if f(x)=6x+7
f(r-2)
Just substitute (r-2) for x and solve for r.
f(r-2)=6(r-2)+7
f(r-2)=6r-12+7
f(r-2)=6r-5 ans.