Explanation:
By Arithmetic Progression,
The first term a1=70.1
Common difference, d= 72.2-70.1=74.3-72.2= 2.1
Nth term, T_n=a1+(n-1)d where n=time taken in minutes
T_n=70.1+[2.1*(n-1)]
(b) n=12
T=93.2°F
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