Option D : "he percent of increase of respiratory illnesses per year"
Since you want to show how the respiratory illnesses increase over the last 15 years, then plot a graph that shows such increase year by year.
if youre factoring, there is no possible factors
if youre solving for x, it is
abd=16 and dbc = 74
alr so x+9+11x-3 = 90, so you collapse that down into 12x +6= 90, subtract 6 from both sides to get 84, then divide both sides by 12 to get x = 7. Then, you just have to plug x back into x+9 and 11x-3
Using Pythahorean theorem
It is equal to