11. Let x represent the number of girls and y represent the number of boys in a classroom which expressions below represents the total number of students in the classroom? a. x + y b. x - y c. 2x + 2y d. 2x - 2y
12. The first number is three more than twice the second number. which of the following equations gives the relation to the numbers? a. x = y + 3 b. x = 2y + 3 c. x = 2y - 3 d. 3x = 2y
13. A number x is not more than 5. which of the following inequalities can represent the situation? a. x > 5 b. x ≥ 5 c. x < 5 d. x ≤ 5
14. the number of children (x) and the number of adults (y) in a small boat cannot exceed 25. Which of the following represent this constraint? a. x + y > 25 b. x + y ≥ 25 c. x + y < 25 d. x + y ≤ 25
15. how do represent the boundary line of the graph of the inequality 2x + y < 5? a. Dashed line b. Solid line c. None of the above d. Connot be determined
