Mathematics

Justice Ho

23 January, 21:17

6. Simplify the following expression by combining (adding together what is alike) like terms:

8n + 5 - n + 13

*

9n + 18

13n + 12

25n

7n + 18

7. What is the domain (the first element or number, from each pair) of this relation:

{ (4,1), (5,2), (6,-1), (8,5) }

*

{4, 5, 6, 8}

{4, 5, 6}

{-1, 2, - 1, 5}

{4, - 1, 5, 2}

8. On a number line, which are greater: *

absolute numbers

negative numbers

positive numbers

no numbers