Answer:
3x
Step-by-step explanation:
2x+x = 3x
You first must find the 18% of the fish population.
You multiply 500 by .18 . You are supposed to get 90.
90 is the 18% fish increase.
Then you just add 500 + 90 and you will get 590 fish that are now in the school.
The base angles are congruent because it's an isosceles triangle the base angles would both equal 81
The answer for the question is 4