I need to find the profit for products sold.

P(x) = -750x^2 + 15,000x

x is the number/products sold

Can you step by step please

they give you the formula. What else do you need? Maximum profit?

recall that for ax^2+bx+c the vertex is at x = -b/2a

So, here a=-750 and b=15000

max profit at x = 15000/2*750 = 10
P(10) = 75000