Question

Consider the function f(x) = x(squared) − 2x + 6. Find the value of f(x) when x = 3 and select the correct answer below.

A)1
B)3
C)6
D)9

Answer 1

@dawsonj

Answer 2

This is the Biology forum. Are you looking for Mathematics?\[f(x)=-2x+6\rightarrow f(3)=-2(3)+6\]

Answer 3

c

Answer 4

Woops, forgot the beginning part.

Answer 5

my bad xD @kittiwitti1 it was an honest mistake but ty
and ty @dawsonj

Answer 6

np

Answer 7

\[f(x)=x^{2}-2x+6\rightarrow f(3)=(3)^{2}-2(3)-6\]

Answer 8

Also, it's preferable to not give direct answers unless there is no possible way to explain things. Just an FYI

Answer 9

...I messed up the sign, it's +6 sorry lol\[f(3)=(3)^{2}-2(3)+6\rightarrow 9-6+6\]....Doesn't that make it 9??

Answer 10

I really just need the direct answer right now because its been explained to me over and over and i still don't get it and i'm in a super duper time crunch right now.

Answer 11

Just replace x with 3 ☻

Answer 12

ty (:

Answer 13

np ^-^
I'll be here if you get stuck on it :P

Answer 14

need to have WAY to many assignments turned in by 11 tomorrow in WAY too many classes :( So i'm on a major crunch for time :/

Answer 15

awe, thank you (:

Answer 16

Though, what I solved for got me 9 and not 6...
the answer should be D. I think you should check it yourself though x_x

Answer 17

Ok, yes, the answer is 9.
https://www.wolframalpha.com/input/?i=x2-2x%2B6+when+x%3D3

Answer 18

I should check, i'm just rushing and clicking tho tbh

Answer 19

ty (: you're very helpful !

Answer 20

xD you can always use wolfram alpha when you're stuck on functions ^-^

Answer 21

To check*

Answer 22

OMG TYSM
YOU ARE GREAT !!

Answer 23

For the functions f(x) = 2x + 3 and g(x) = 6x + 2, which composition produces the greatest output? I typed that in there and it told me it didn't understand -.-

Answer 24

I think you just stick in some random integer for both equations and see which one gives a greater result. Output usually means "solve for f(x)", with x being the input.

Answer 25

So... something like x=7 (:

Answer 26

Like this: f(7)=2(7)+3 and g(7)=6(7)+2... which one gives the greater answer? :-)

Answer 27

Ohkai, ty (:

Answer 28

np

Answer 29

is x=4 a function ?

Answer 30

@dawsonj

Answer 31

yes it s

Answer 32

ty

Answer 33

not a function

Answer 34

f(x)=x^2-2x+6 \\ \Downarrow \\
f(3)=3^2 -2 \times 3+6=9-6+6=9

The answer is D. 9.

Answer 35

..