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
Can someone help me please