Answer:
B
Step-by-step explanation:
x + y =90
y= 4x +6
_______
x + y = 90
4x − y = -6
So this is a composition of functions. Think back to solutions of equations. You would have to put the equation into the other equations. It's like this!
So I graphed it like this on desmos:
(2*5^2)+4/3^2-5
(2*25)+4/3^2-5
50+4/3^2-5
50+1.7-5
46.7
here's the answer to your question