How can I make this formula? (volume vs time)

[Mushroomfarmer]

I registered here just to solve this problem. I don’t have the brain power or knowledge for this so I’m hoping someone here can help!

Below are data points. Using those, how do I come up with a single equation that lets me plug in the volume(ml) I want to autoclave and get the time in minutes? Thanks in advance for any help!

Volume(ml), Total Time(min), Time per ml(s)
75ml, 25min, 20s/ml
250ml, 30min, 7.2s/ml
500ml, 40min, 4.8s/ml
1000ml, 45min, 2.7s/ml
1500ml, 50min, 1.5s/ml
2000ml, 55min, .825s/ml

 

[Harry_the_cat]

If you graph time against volume, the points look like this:

A simple linear regression gives:

 

[skeeter]

Volume (mL) vs Time (min)

 

[Otis]

Quadratic Regression:
Minutes = -0.000006786793 ML² + 0.028603 ML + 24.008313

( ML , [imath]\;\;[/imath]Minutes )
(75, 0026.12)
(250, 030.73)
(500, 036.61)
(1000, 45.82)
(1500, 51.64)
(2000, 54.07)


[imath]\;[/imath]