The answer is option three(photo for step by step)
Well I personally think and this is just my opinion or should I say answer but I think it is 16
B. x > -4 I did da test. That's da correct one :-)
Hello : the system is :
<span> y= -2x+4 ...(1)
y= x² +4x+13....(2)
x²+4x+13 = -2x+4
x²+6x+9=0
(x+3)² =0
x+3=0
x= -3
subsct in (1) : y=-2(-3)+4 =10</span>
