SOLUTION: Given the function f(x) = x + 3x + 4 , find the value of f(–1)

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Question 414404: Given the function f(x) = x + 3x + 4 , find the value of f(–1)
Answer by emargo19(101) About Me  (Show Source):
You can put this solution on YOUR website!
f(x)=x+3x+4
substitute '-1' for x in the equation
Therefore
f%28-1%29=%28-1%29%2B3%28-1%29%2B4%0D%0A%7B%7B%7Bf%28-1%29=-1-3%2B4
f%28-1%29=0