Answer:
the unknown factor should be the 6(which it should be stated in the question) like if ur trying to solve for the amount of plates in each pile, then the unknown factor would mean that its the amount of plates :p
Step-by-step explanation:
-5-12=-17 so it is b)
A
Given
x - 9 > 3 ( add 9 to both sides )
x > 12
13, 15 and 17 are all greater than 12
However, 11 is less than 12 and is not in the solution set → A
4
Divide 28 by 4 to get 7
Put the bigger decimal on top
