The red graph is the result of a vertical translation, 4 units down, of the black graph.
This means that, whenever the black graph associates

The red graph must associate 4 less to the same input:

So, the equation for the red graph is

or, equivalently,

Step-by-step explanation:
Rs8,100 / (Rs45 per square meter)
= 180 square meters.
The area of the 4 walls of the room is 180 sq.m.
The ball will hit the ground between 8 and 9 seconds
Their potential to regenerate and repair damaged tissue. Some current therapies, such as bone marrow transplantation, already make <span>use of </span>stem cells<span> and their potential for regeneration of damaged tissues.</span>