Hope this helps you with your questions.
181818/1000000. let me know if im wrong! <3
Answer:
36 since they are similer triangles
Longer process:
24/24 = 36/x
solve this and you get 36
the answer is D-n is greater then or equal to nine.
because the red dot starts on nine and goes up its greater than nine and because its on nine its also going to equal it. I had a problem getting the signs messed up when I learned it but I remember the sign always eats the greater number. I hope this answer could help and I'm sorry if the answer is incorrect.