Answer:
45x^2-328x+124
Step-by-step explanation:
ANSWER:
We know that,
Speed = Distance/Time
So, Time taken = 20kmh-¹/160km
He coud walk 5 meters in one hour because i did 60-12-12-12-12 and then you have a extra 12 so he got 5 meters in one hour part b he can 1 more further because 1 meter because before it was 12 hope explained it right

The answer is above.
Additional note 1:

Additional note 2:
In the answer I filled in "0" at the place where "n" was. This is because the question tells us n=0
The elephant lost 4 pounds each month. Because he is losing weight, and not gaining weight, you have to make the answer negative