Y - 2 +

Your teacher may also just want the answer y - 2 with a 7 remainder
Either way, you set it up like long division and solve as such.
Answer:
Step-by-step explanation:
y = x² + 4x is an up-opening parabola with x-intercepts 0 and -4.
y ≥ 0 when x≤-4 or x≥0
range: (-∞,-4)∪[0,+∞)