How would I solve this question?

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

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i