SOLUTION: Hi, Given the function F described by F(z)=2z^(2)+8z-3 Find the function value f(-7)=? Thank you

Algebra ->  Functions -> SOLUTION: Hi, Given the function F described by F(z)=2z^(2)+8z-3 Find the function value f(-7)=? Thank you       Log On


   

Question 231974: Hi,

Given the function F described by F(z)=2z^(2)+8z-3
Find the function value f(-7)=?
Thank you
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
F%28z%29=2z%5E%282%29%2B8z-3 find F(-7)
Just plug in z = -7 everywhere and then simplify
F%28z%29=2z%5E%282%29%2B8z-3
F%28-7%29=2%28-7%29%5E%282%29%2B8%28-7%29-3
F%28-7%29+=+2%2A49+-+56+-+3
F%28-7%29+=+98+-+59
F%28-7%29+=+39