Can't really explain that well, but the rate of change in an exponential function should always be decreasing or increasing. Instead of it being constant like a linear equation.
I.E. Not additive, instead to find it we need to divide.
So, it should be 9. However, It does not seem to be maintained for the values after 3. Oh well!
Step-by-step explanation: if they each each take 20 for insurance and 385 then its 405 title. hen you take 100,000 and divide it by 405 getting 246.91358. but you cant buy .91358 of a computer so you round down.