help me make an equation

[snorkel]

I forgot how to do this

I have this data:

7 days in business --------- 5 servers
14 days -------- 13
21 days --------- 21
28 days --------- 42
35 days --------- 50
42 days --------- 59
49 days --------- 80
56 days --------- 120


I need to make a function where the variable is the number of days in business and the output is the projected number of servers. I can't find my graphing calculator

[strongbad]

y=ax+b
i'm too lazy to analyze your data though

[bluaki]

Don't feel like making a function, but here's a plot:
[spoiler][/spoiler]

The last data point of 56 days and 120 servers looks like an outlier. With that, it looks roughly like exponential growth. Without, it looks roughly linear.

[snorkel]

y=ax+b
i'm too lazy to analyze your data though

yeah but I need like a quadratic function that accounts for growth, or something, not a linear average

[strongbad]

with trendline, r squared value, and equation, although it doesn't really makes sense to me

EDIT: oh nvm that's not what you want lol
idk how to do anythign else

[spaceman]

I started messing with trendlines and then realized that's not what you wanted

[Socks]

i'm not a math man, but it looks like exponential functions are what you're looking for, particularly exponential growth.

[bluaki]

with trendline, r squared value, and equation, although it doesn't really makes sense to me

EDIT: oh nvm that's not what you want lol
idk how to do anythign else

y=2.1463x - 18.857 from that image is pretty much the function he needs.
Using any x value for number of days, it'd give a rough estimate for number of servers if the known trend continues.

Exponential growth doesn't seem like it'd be as suitable, because the type of server gain in this context isn't the sort of thing I'd expect to raise that fast.

[snorkel]

y=2.1463x - 18.857 from that image is pretty much the function he needs.
Using any x value for number of days, it'd give a rough estimate for number of servers if the known trend continues.

Exponential growth doesn't seem like it'd be as suitable, because the type of server gain in this context isn't the sort of thing I'd expect to raise that fast.

or would you

[BlackDS]

Get a TI graphing calcualtor, and press a lot of buttons, and you will get an equation. [Stat] [edit] (put in your data) [Stat] [quadReg] [L1] [,] [L2] [,] [stat] [Y-var] [y1] [enter]

And people say that algebra 2 teaches you nothing (which I have a final for tomorrow wish me luck!)

[snorkel]

Get a TI graphing calcualtor, and press a lot of buttons, and you will get an equation. [Stat] [edit] (put in your data) [Stat] [quadReg] [L1] [,] [L2] [,] [stat] [Y-var] [y1] [enter]

And people say that algebra 2 teaches you nothing (which I have a final for tomorrow wish me luck!)

yes I remember how to do it on A CALC but I think I sold mine for coke money awhile ago.

[strongbad]

yes I remember how to do it on A CALC but I think I sold mine for coke money awhile ago.

ಠ_ಠ