This should be the correct answer. I recommend Desmos.
Here we are:
Triangle PQR is equilateral, all the angles are 60, this means that triangle PSR is an isosceles triangle. 180-90=90 90/2=45 60-45=15
B=15
Hope this helps :)
Answer:
x + (x + 12)
Step-by-step explanation:
(first number x would represent boys)
From here just find a number that works as both x intercepts