I am sorry, I am so confused
I wish I could help
Answer:

Step-by-step explanation:

A= (a+b)/2*h
A=(12+15)/2*5
A=(27/2)*5
A=13.5*5
A=67.5in
No since the between consecutive numbers doesn't give a constant
Answer: The last one - 5 1/3 divided by 1/6
Step-by-step explanation:
since you are trying to figure out how much she runs a day, u divide
Hope this helps :)