Answer:
2765
Explanation:
You did not specify what the equation 225+47Q+4Q² is for. This is the answer if that equation is for the Average Variable Cost. Let me know if the equation is for something else
Let Q = 20
AVC = 225 + 47Q + 4Q² = 225 + 47(20) + 4(20)² = 225 + 940 + 1600 = 2765