8. Suppose we represent the distance above the ground by a positive integer and that below the ground by a negative integer, then answer the following:

(i) An elevator descends into a mine shaft at the rate of 5 metre per minute. What will be it position after one hour ?

(ii) If it begins to descend from 15 m above the ground, what will be its position after 45 minutes.

Answer:rgihf

Step-by-step explanation:tjyrjddljfckucgh