I might've misinterpreted it then. I thought no calculus meant we could derive the area by simple logic.
Well I guess the number for each quadrant is predetermined then.
it's III
How about you get those 5 points away first and then we'll talk
Given that you both find the same answer.
Would you care to give some explanation Bertie?
I thought you said we didn't need any calculus...
Well obviously you have a picture with that indicating the quadrants.
But it's the quadrant on the left-bottom since that's where x<0 and y<0.
Think for yourself if you also know which quadrant gives x>0 y<0, x<0 y>0 and x>0 y>0
The value of leela's account can be calculated in the following way;
$$\begin{array}{lcl} \mbox{At the beginning (year 0) }VI = 500\\ \mbox{After 1 year }VI = 500 \times 1.045\\ \mbox{After 2 years } VI = 500 \times 1.045 \times 1.045= 500 \times 1.045^2\\ \mbox{After t years } VI=500 \times 1.045^t\\ \mbox{Adele started 2 years earlier so by the time Leela started saving she already had }500*1.045^2 \mbox{ in her account}\\ \mbox{Therefore at year t Adele has }500*1.045^2*1.045^t = 500*1.045^{t+2} \mbox{ in her account}\\ \mbox{Therefore the percentage of value of Adele's account compared to Leela's account can be given by}\\ \frac{500*1.045^{t+2}}{500*1.045^t} \times 100\%= 1.045^2 \times 100\% = 1.092025 \times 100\% = 109.2025 \% \approx 109.20 \% \end{array}$$
Reinout
edit: Between -4 and 0 we have 3 integers
Between 0 and 8 we have 7 integers
Don't forget 0!
So we have 3+7+1=11 integers
