SOLUTION: find the value given that f(x)=2x+1 f(1)-f(-1)

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Question 266550: find the value given that f(x)=2x+1
f(1)-f(-1)
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
f(1) = 2(1) + 1 = 3
f(-1) = 2(-1) + 1 = -1
f(1) - f(-1) = 3 - (-1) = 4