Which step is included in the graph of the function f(x)=[x-1]? (the brackets are ceiling functions symbols)

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a.the profit when the unit price is equal to 0b.the unit price(s) when the profit is equal to 0c.the profit when the unit price is greatestd.the unit price(s) when profit is greatest

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

What are the solutions of the equation x4 + 6x2 + 5 = 0? use u substitution to solve.