Will give a brainliest to the correct

select the word from the list that best fits the definition

the set of values that make a statement true

algebraic inequality
compound inequality
inequality
solution set
variable
combination

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

Can someone me and do the problem plz so i can understand it more better

Simplify the expression. -2/5(10+15m-20n)