lynn, jude and anne were given the function f(x)=-2x^2+32, and they were asked to find f(3). lynns answer was 14, judes answer was 4, and annes answer was +-4. who is correct?
The only thing we need to here to find who is correct is evaluate the function [tex]f(x)=-2 x^{2} +32[/tex] at [tex]x=3[/tex]. To do that we are going to replace [tex]x[/tex] with [tex]3[/tex] in the function: [tex]f(x)=-2 x^{2} +32[/tex] [tex]f(3)=-2 (3)^{2} +32[/tex] [tex]f(3)=-2 (9) +32[/tex] [tex]f(3)=-18+32[/tex] [tex]f(3)=14[/tex]
We can conclude that Lynn is correct. [tex]f(3)[/tex] is indeed 14.
