Answer:
See the attached file for the answers.
Step-by-step explanation:
See the attached file for the explanation
Answer:

Step-by-step explanation:
Answer:
n + 11 and 11 + n
Step-by-step explanation:
Let n be the unknown number,
n is increased by 11,
That is, n + 11
By the commutative property of addition,
The expression would be,
11 + n
For drawing a model that shows n + 11
Take two boxes in which first shows n and second shows 11 and add them,
Similarly, for showing 11 + n, take first box that shows 11 and second box that shows n then add them.
Answer:
1 solution
Step-by-step explanation:
If you were to graph this line it would be a straight line so there is 1 solution.
y=3x
x=y/3
Answer=7 minivans
45/7=6.4
since you can't have 0.4 minivans, we round up 6.4 to 7