Answer:
A
Step-by-step explanation:
Option A is correct that is
We have been given a formula
We will put values of n in
when n=2 we get
when n=3
Therefore, Option A is correct that is
20(4×-2)
________
(4 - (-2))²
simplified;
20(-8)
_____
(6)²
-160
______
36
-4 16/36
-4 4/9
x = 12
Answer: 1.2 miles a day