Answer:
7 sheets of paper
Step-by-step explanation:
$40-$19=$21
$21/$3=7 sheets of paper.
In words:
I did 40 minus 19 to get 21, and the divided 21 by 3 to get 7 sheets of paper.
9/10....................................
Answer:
B. 
; 
Step-by-step explanation:
According to the statement, we find that the following two conditions must be observed:
(Eq. 1)
(Eq. 2)
Since the difference between two even numbers leads to another even number. Hence, 
must be an even number and the correct answer is B.
The right, because your going forward not backwards
From the number 842 to 109 is a decrease of 733. so 109 minus 733 will result in a -624.
