Question

I need someone to help me through my homework!

Answer 1

Please help I will medal.

Answer 2

@iGreen @koolkat13

Answer 3

Ok thanks for looking at it

Answer 4

First we have to find the starting prices and growths for functions A, B, and C.

Answer 5

ok. How do I do that?

Answer 6

Function A already tells you..

\(\sf f(x) = \color{red}{25}(1.\color{blue}{08})^x\)

\(\sf \color{red}{Starting~Price}\)

\(\sf \color{blue}{Rate-of-Growth}\)

Answer 7

Function B the starting price is 22, Function C starting price 30?

Answer 8

Function B goes up by 1.56 and C by .04?

Answer 9

Correct!

Answer 10

Yay!

Answer 11

\(\color{blue}{\text{Originally Posted by}}\) @horsegirl27
Function B the starting price is 22, Function C starting price 30?
\(\color{blue}{\text{End of Quote}}\)
Well for this

Answer 12

ok

Answer 13

\(\color{blue}{\text{Originally Posted by}}\) @horsegirl27
Function B goes up by 1.56 and C by .04?
\(\color{blue}{\text{End of Quote}}\)

You're right about C, it increases by 4%, but not about B.

Answer 14

Ok. What is the rate of growth for B? I wasn't too sure the way it's written...

Answer 15

I remember in the lesson something about adding 1 and it's seen it function A... when do I do that step?

Answer 16

Hold on

Answer 17

ok

Answer 18

Okay, function B decreases by 2%.

Answer 19

So we have:

Function A:

Starting Price = 25
Growth = 8%

Function B:

Starting Price = 22
Growth = 2%

Function C:

Starting Price = 30
Growth = 4%

Answer 20

Ok how did you get the rate of growth for B?

Answer 21

Oh so for stock D I'm using this information to make a function right? It says use the second lowest starting price and second highest rate of growth

Answer 22

So it would be f(x)=25(1.04)^x for function D right?

Answer 23

2nd lowest..

We have:

30, 25, 22

So it has to be between 25 and 22.

Answer 24

Oh I see

Answer 25

Are you sure?

Answer 26

Yes..2nd lowest..so it has to be between the lowest, and the next lowest.

Answer 27

Pick any number between 25 and 22

Answer 28

23

Answer 29

And I pick a number between 4% and 8% for second highest?

Answer 30

Yep

Answer 31

Which do you want to pick?

Answer 32

6%

Answer 33

Okay, let's do a 6% increase, so we have:

\(f(x) = 23(1.06)^x\)

Answer 34

ok

Answer 35

Here's the graph:

https://www.desmos.com/calculator/6ujurwld5v

Answer 36

Thanks!

Answer 37

So @iGreen I don't understand how to do C. I understand what is happening, but I'm not sure how to do it

Answer 38

It affects Stock D by -6.

\(f(x) = 23(1.06)^x\)
\(g(x) = -6\)

Find \(f(x) + g(x)\):

\(23(1.06)^x + -6\)

\(23(1.06)^x - 6\)

Answer 39

oh ok

Answer 40

It just makes f(x) shift down 6 units

Answer 41

Here's a graph of it:

https://www.desmos.com/calculator/zcf25epwsa

Answer 42

that makes sense thanks

Answer 43

now for 4 what are the effects? Can you help me explain?

Answer 44

Here:

https://www.desmos.com/calculator/h4wjbmbz1p

Answer 45

The first one makes the exponent greater, so it rises more quickly.

The 2nd one makes the exponent negative, so it makes the graph decrease.

The third one just shifts the graph up 3 times.

Answer 46

ok. so each changes the graph. Thanks for helping me! Later I might need help with another, I will tag you

Answer 47

No problem.