Select the statements that are true based on the following given information. D = {xl x is a whole number}
D a vole
E={xl x is a perfect square < 36}
F= {x1 x is an even number between 20 and 30)
The expression Dn Eis (1, 4, 9, 16).
The expression Dn F is (12, 14, 16, 18).
ODU (En F) is (all whole numbers).
(En F) is the empty set.
The expression Dn (EU F) is 25

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 (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?