D. x=3
I don't really know how to explain it other than the only points on the line are sitting at the x=3 and y=anything
So basically what you do is that you have to go to safari and go to tweak door and then download brainly++
Hello,
x² + 5x + 6 = 0
a = 1 ; b = 5 ; c = 6
∆ = b² - 4ac = 5² - 4 × 1 × 6 = 25 - 24 = 1 > 0
2 solutions :


S = { -3 ; -2}
Let x = small number
y=large numebr
x+y = 90
y-4x=15
substitute
we get:
x=21
y=90-21 = 69