It’s 60 degrees
Ex: the total number when the degrees is added together should be 180
The answer is z = 4 because of you put 4 into the equation it equals to 100
If r(x)= 11x, and c(x)=6x +20, then just put that into the equation.
So instead of p(x) = r(x) - c(x)
I would be p(x) = 11x - 6x + 20
Now solve.
p(x) = 5x + 20 is your final answer, so A.
A is increasing , b is maximum , c is decreasing, and d is minimum