Time (mins)	Temp ( F)
0	179.5
5	168.7
8	158.1
11	149.2
15	141.7
18	134.6
22	125.4
25	123.5
30	116.3
34	113.2
38	109.1
42	105.7
45	102.2
50	100.5

a) Without creating a graph, how can you determine if the data is linear?

b) Use technology to determine an exponential equation for the brewing pot.

c) Using the mathematical model from part b), predict the temperature of the coffee after 60 minutes.

d) Come up with an exponential equation that has the coffee:

i) cooling quicker

ii) cooling slower