Solve for s in the equation please

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

An equation in slope-intersept form the lines that passes thought (-8,1) and is perpindicular to the y=2x-17.

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read