The equation has the form y = 615 * 1.312ˣ
a = 615
b = 1.312
How to get the equation
1048 / 818 = 1.281
1341 / 1048 = 1.279
1897 / 1341 = 1.414
2405 / 1897 = 1.267
3108 / 2405 = 1.292
The value of b is the value of the average of these numbers
b = 1.281 + 1.279 + 1.414 + 1.267 + 1.292 / 5
= 6.533 / 5
= 1.3066
b = 1.30709
ab = 818
a * 1.30709 = 818
a = 818 / 1.30709
a = 615.817
The equation has the form y = 615 * 1.312ˣ