Question

@freckles i got another question like that(:

Answer 1

@mondona you should look at your last question. I don't think you are through with it.

Answer 2

yes i used my notes i got it, sorry my pretest is timed

Answer 3

Well we can go through the possible combinations like @amistre64 did

Answer 4

okok

Answer 5

Start off with A if you want to

Answer 6

and see it works that way

Answer 7

So A starts increasing to about what number?

Answer 8

like at what x does it stop increasing? And we are reading from left to right..

Answer 9

And I'm looking for the first stop.

Answer 10

1.5

Answer 11

of that means the derivative function at that point would be 0 since you have a resting point there

Answer 12

Do you see any of your graphs touching the x-axis at 1.5

Answer 13

just A

Answer 14

wait A stops increasing at .7

Answer 15

oh no it is not

Answer 16

not 1.5

Answer 17

oh oops

Answer 18

and i'm just approximating

Answer 19

so let me rephrase my question
so the derivative function at x=.7 should be touching the x-axis at that point

Answer 20

oh i see

Answer 21

Now I'm not saying we have the correct order yet

Answer 22

okk

Answer 23

But it does look like B is doing what at .7?

Answer 24

or i mean what is the y value there at x=.7 (for curve B)

Answer 25

i dont know..

Answer 26

Isn't the B curve passing through the x-axis at x=.7?

Answer 27

That would mean the y-value is 0.

Answer 28

So if we assume A'=B
Do you think B'=C? Test it and see.

Answer 29

if you want look the critical numbers of B first
since B is smooth and continuous then all of its critical numbers will be x-intercepts for C but are they?

Answer 30

If not ABC is not the right order

Answer 31

And it isn't the right order you need to move on to test CAB

Answer 32

it is CAB

Answer 33

ABC is not the right order

Answer 34

How do you know CAB is correct? :)

Answer 35

i tested it the way we tested it before(:

Answer 36

coolness

Answer 37

That choice actually looks good

Answer 38

thank you so much for your help!