The selling price of an item is $600. It is marked down by 10%, but this sale price is still marked up from the cost of $450. Find the markup from cost to sale price.
The markup is $ (Round to the nearest dollar as needed.)

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = -6. which function could heather be writing? fx) = x2 + 36x + 12 = x2 - 36x - 12 f(x) = -x + 12x + 36 f(x) = -x? - 12x - 36