Question 972870
P=Poe{1+r}^n
1750=1500{1+r}^1, since n=1 hour
1.1166=1+r  ; divided 1750/1500 and n=1
r=0.1166

An exponential function that is increasing is Starting value*(1+r)^n; r is the rate per n unit time, and n is the number of times.  Here, with only one hour, the rate is 0.1166.  This does describe the behavior after 1 hour, but after several hours, there may well be better functions that describe the behavior.