SOLUTION: F(x) = -5x + 11 and f(n) = 21, what is the value of n?

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Question 1165120: F(x) = -5x + 11 and f(n) = 21, what is the
value of n?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
-5n+11=-21
-5n=10
n=-2
check
f(-2)=(-5)(-2)+11=21