Question

What exponential function is the best fit for the data in the table?

Answer 1

x f(x)
1 -4
3 -1
4 3

Answer 2

Choices?

@kelseymanghamx

Answer 3

I keep forgetting those, dang.

Answer 4

f(x) = 4(3)x - 1 + 4

f(x) = 4(3)x - 1 - 4

f(x) = one fourth(3)x - 1 + 4

f(x) = one fourth(3)x - 1 - 4

Answer 5

@iGreen

Answer 6

Someone help!

Answer 7

Well you could plug in x=1 and check which one is -4

Answer 8

Im lost.

Answer 9

No idea. Im doing schooling online and havent learned that.

Answer 10

Wait nevermind i was wrong i looked at it wrong

Answer 11

These are 3^x power correct ?

Answer 12

yes

Answer 13

Okay for the first one we are given the value when x=1 y=-4,
if we plug x into the first equation 4(3)^1-1+4
does this equal -4?

Answer 14

No.

Answer 15

So it is not that one. Now for the next one
4(3)^1-1-4
how about this one?

Answer 16

Nope. 7

Answer 17

Is \(x\) an exponent?

Answer 18

Yes

Answer 19

Yeah but now i am confused @iGreen if you plug x in it seems none of them fit

Answer 20

I am too..I graphed them and none of them cross the points..

Answer 21

They don't even seem close

Answer 22

f(x) = 4(3)^x - 1 + 4

f(x) = 4(3)^x - 1 - 4

f(x) = one fourth(3)^x - 1 + 4

f(x) = one fourth(3)^x - 1 - 4

Answer 23

Wait is it 3^(x-1)

Answer 24

Yes

Answer 25

Ohhhhhh...

Answer 26

Well that is the problem lets try this again

Answer 27

Okay

Answer 28

Still doesn't seem to work..

Answer 29

Closest one is D..

Answer 30

Okay
It only asks for best fit

Answer 31

Okay, I graphed it here..

https://www.desmos.com/calculator

Answer 32

It doesnt have to be graphed

Answer 33

4(3)^(1-1)+4=8 NOT THAT ONE
4(3)^(1-1)-4=0 not again
1/4(3)^(1-1)+4=5/4
1/4(3)^(1-1)-4=-3.75 d is the only one close

Answer 34

Thank you guys for you help.

Answer 35

I would go with d, np

Answer 36

Its greatly appreciated. Math isn't my strong suit.

Answer 37

Using the graph below, calculate the average rate of change for f(x) from x = 2 to x = 6.

Answer 38

Know anything about this?