1. The problem statement, all variables and given/known data see attachment 2. Relevant equations log10x=y 10y=x 3. The attempt at a solution Since I'm rather confused on reading a logarithmic scale, I thought I'd post this to see if I'm doing this right and/or if there's a better way to do the problem. a) T=500 C using the # of intervals we can say that if d=.01, x=.5 intervals so... log(t)=.5 t=3.16 min similarly for d=.1 log(t)=3.5 intervals t=3162 change in time = 3162-3.16 = 3158.8min b) same process but use x=-.5 intervals and x=2.1 If this method does work, is there any way to interpolate values so I can be more exact? or is there a better way to do the problem in general? thanks!