7x20=140. 7x2000=14000. The only thing that changes the product of these numbers is the amount of zeros behind the 2. Since the only two numbers that affect the answer is the 7 and the 2. (7x2=14). The number of zeros behind the 2 affect how many zeros will be included in the product.
N4=c
n times 4, n being a number of notebooks, would equal c, or the overall cost.
Answer:
2 3/8 in.
Step-by-step explanation:

Slope, shmlope. What's the q?
It is hard to see the questions in the picture.