SOLUTION: Given the function f(x) = 3x^2 - 7, what is the value of f(-3)?

Algebra ->  Inequalities -> SOLUTION: Given the function f(x) = 3x^2 - 7, what is the value of f(-3)?      Log On


   



Question 932310: Given the function f(x) = 3x^2 - 7, what is the value of f(-3)?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
f%28x%29+=+3x%5E2+-+7


f%28-3%29+=+3%28-3%29%5E2+-+7 Replace EVERY x with -3


f%28-3%29+=+3%289%29+-+7


f%28-3%29+=+27+-+7


f%28-3%29+=+20
------------------------------------------------------------------------------------------------------------------------

If you need more one-on-one help, email me at jim_thompson5910@hotmail.com. You can ask me a few more questions for free, but afterwards, I would charge you ($2 a problem to have steps shown or $1 a problem for answer only).

Alternatively, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Any amount is greatly appreciated as it helps me a lot. This donation is to support free tutoring. Thank you.

Jim
------------------------------------------------------------------------------------------------------------------------