SOLUTION: Calculate the indicated value. f(x) = 7x - 27x^2 - 7 find f(-7) I'm not sure where to start, do I just replace each x with -7? I have a few question like this and if possib

Question 83834: Calculate the indicated value.
f(x) = 7x - 27x^2 - 7
find f(-7)
I'm not sure where to start, do I just replace each x with -7? I have a few question like this and if possible I'd like to see the steps and the answer so I can figure out the rest of my questions. Thank you for your help!
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Whenever you see something like f(-7) you just substitute -7 in for x (ie you replace every x with -7) and you evaluate the answer.

Plug in x=-7

Square -7

Multiply

Combine like terms

So f(-7) is -1,379

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