Answer:
Step-by-step explanation:
30 minutes / 3 miles = 10 minutes for 1 mile
7 miles * 10 minutes per mile = 70 minutes total to run 7 miles

so our slope is undefined, that means a vertical line, check the picture below
Answer:
Each Person should owe 30$.
Step-by-step explanation:
84.99+5.10=90.
90/3 friends= 30$ each. There fore, the friend's calculation is not reasonable.