Question

What does f(x) equal?

Answer 1

I know it means y but i don't know how to get the answer for f(x)= 2^x-3 = 6

Answer 2

f(x) is equivalent to the equation \(2^x-3\) AND \(6\) so, just solve the second part. f(x), g(x), h(y) yada yada all just mean some function of whatever variable is inside the parentheses.

Answer 3

only sometimes will you use it as y

Answer 4

Do you know the answer to the question @FibonacciChick666 ?

Answer 5

yes, why?

Answer 6

could you give it to me :)

Answer 7

no, that is against the policies of this site

Answer 8

WHAT! I see people do that all the time. Well, could you help in figuring it out?

Answer 9

that would be what I was doing, and yes, report those people because that is cheating

Answer 10

you can read the Code of Conduct if you wish

Answer 11

thank for telling me I had no idea it was that serious lol.

Answer 12

So would it be
f(x)=2^x-3 +6
2-3+6 ?

Answer 13

yea, it drives me crazy. anyways not quite you have \(f(x)=6=2^x-3\) correct?

Answer 14

? Im sorry but I don't get what you got

Answer 15

how is it f(x) = 6 = 2^-3

Answer 16

That's what you are starting with, yes?

Answer 17

because that is what you wrote up top?

Answer 18

I moved the 6 since it is an = sign just to simplify

Answer 19

is the answer 1.00?

Answer 20

Idk, I haven't done it yet, but I highly doubt it

Answer 21

alright could you dumb it down for me? I just really don't get it.

Answer 22

well, first, let's make sure we have the right question please. Can you type it in here again

Answer 23

give me a second

Answer 24

k

Answer 25

ok that explains alot

Answer 26

okay good

Answer 27

so our function is \[f(x)=2^{x-3}+6\] Our mission is to find the y-intercept. Now can you tell me what a y-intercept is?

Answer 28

I know what an y intercept is but not the problem above. do we just do
2-3+6 to figure out what x equals?

Answer 29

no, if you want my help, tell me what x= at the y-intercept

Answer 30

I need to know you know this part before we can move on

Answer 31

I don't.

Answer 32

ok, then you do not know what a y-intercept is, I must conclude. So, can you please read here: http://www.purplemath.com/modules/intrcept.htm
So we can continue, when you come back I want you to tell me what x= for every y-intercept.

Answer 33

0?

Answer 34

good, now we know that at the y-intercept, x=0. So now. Plug zero in and solve

Answer 35

\(f(x)=2^{x−3}+6\) it is very important that you remember the exponent

Answer 36

So is the answer 12?

Answer 37

show me how you got that... because I am not sure how you did

Answer 38

step by step please,

Answer 39

oh! would it be 0?

Answer 40

no that is not corrrect either, please please show me your work

Answer 41

you know what, thank you so much for your help. I'm just gonna have to ask my teacher when i'm in class or something because clearly i'm not getting any of this lol.

Answer 42

but you haven't showed me your work, I can help, but I need to know what you are messing up so I can fix it

Answer 43

What i'm seeing is
f(x)= 2^x-3 +6
2^0-3+6
2^3 =8
8+6= 14
f(0)=14?
I did it again with a calculator and got a different answer. Is that right?

Answer 44

ok, so, this is where, what is \[0-3=?\]

Answer 45

= -3

Answer 46

yea, so now you have \(2^{-3}\), I bet you get the right answer when you compute

Answer 47

8

Answer 48

it's to the minus 3 not 3

Answer 49

do you know how negative exponents work?

Answer 50

nope

Answer 51

is the answer 6.125?

Answer 52

alright, then I have another quick link for you. Once you get that, you will have your answer

Answer 53

http://www.purplemath.com/modules/exponent2.htm

Answer 54

6.12

Answer 55

first, how did you get that answer?

Answer 56

what does \(2^{-3}=?\)

Answer 57

I used my sisters calculator

Answer 58

well, that isn't allowed ;P now, using that website can you write \(2^{-3}\) as a fraction?

Answer 59

yes?

Answer 60

please do then

Answer 61

I'm tired. Thank you for your help. I'm gonna show my conversation with you to my mom and hopefully she'll get it and help me understand it.

Answer 62

ohk, well once you get \[2^{-3}\] you have the problem essentially done Good luck. Have a nice night

Answer 63

:)

Answer 64

ok wait, Is that 2^-3 or 2^-2

Answer 65

\(2^{-3}\)

Answer 66

0.125

Answer 67

if that is 1/8 then sure, so add it to 6 and round to 2 decimal places(or whatever your problem asks for)... and voila- you have solved the problem