Pls help me with my homework

Thanks

void setup() {
  size(500, 500);
}

void draw(){
  background(255);
  rectMode(CORNER);
  int i = 0;
  for (int y = 30; y < width; y +=100){
    i += 20;
    for (int x = 10; x < height; x +=40){
      // fill(x+i, height/x-45, 211, 150);
      fill(#0AE6F0, x-i);
      rect(x, y, 40, 30);
      x+=40;
      y+=30;
      fill(#0AE6F0, x-i);
      rect(x, y, 40, 30);
      y-=30;
    }
  }
}