Finding equilibrium Quantity from Given Demand function and Total Cost Function #NTA #Net #JRF #IES

[ukpenignatiusigbawase]

Please Sir, could you help solve problem for me, this is two weeks with it, yet no understanding.
A firm's average cost function is given by Y=x²-20x+120 where Y is average cost in naira per unit of output and output price is N10 and is same at all levels.
1. Find the output levels at which the firm breaks even(i.e price=average cost)
2. Graph the cost function and show solution
3. Find a range of prices over which the firm makes across at all levels of output
From Nigeria