tootsie pop experiment due tomorrow? please help!!!!?

[vanslover55555]

i have to do an experiment for my math class and it is due tomorrow. i did not wait untill last minute because i have been trying to do this for about a week not the project is graphong and plotting the data of a tootsie pop. my data is this

minutes circumference
0 9 1/2 cm
3 8cm
6 7cm
9 6cm
12 5 1/2 cm

what i need to do with this is make a scatterplot of the data (circumference vs. time)
find the means point and plot it on the scatterplot
draw a trendline that passes through (x,y) and find its equation
write my equation in slope intercept form and in standard form

then i need to answer these questions
1. what domain and range for your equation are suitable for this situation?
2. what are the units and meaning of the slope of the trend line?
3. what is the y-intercept of the trend line and what meaning does it have?
4. how well do you think the trend line fits the data?
5. what is the x-intercept of the trendline, and what meaning does it have?
6. extrapolate how long it would take you to finish a tootsie pop that has a diameter of 2cm.

please please please help me.. i do not get any of this and it is due tomorrow and i am really freaking out. please help me.. thank you so much