Homework Help: math

Posted by sherri on Sunday, January 4, 2009 at 12:43am.

find thedomain and range of {(7,-2), (-6,-4) (9-9,)-(5-5)}=
evaluate f(x) +3x^2-4x-3at f(x-1)=
evaluate f(x)= -5x+8 atf(-3)=
it will be well appreciated of what how and help with these math problems plz thank you

math - Damon, Sunday, January 4, 2009 at 3:19am
I answered the domain and range one above
f(x-1) = 3(x-1)^2 - 4 (x-1) - 3
= 3 x^2 -6 x + 3 - 4x + 4 - 3
= 3 x^2 - 10 x +4

f(-3) = 15 + 8 = 23

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