Answer:
20
Step-by-step explanation:
Use the distance formula:

The correct answer that I think it is B
Answer:
7 hours
Step-by-step explanation:
Answer:
140/20
Step-by-step explanation:
If you reduce the fraction your left with just 7
Answer:
d - 7
Step-by-step explanation:
The word "difference" tells us that we will be using subtraction. Also, subtraction is not the same if you reverse the terms like, x - 2 and 2 - x are not the same. In your question it say "d and 7" so that's the order we use in the algebraic expression.