The answer is b. 2. It is 2, because -10 plus 4 is -6. Then -6 plus 8 is 2.
Depends how strong the bomb is. If the bomb is weak then you would most likely go up 20-30 floors. If the bomb is in the middle go to the stair case and prepare for impact. If the bomb is strong go down 40 floors if possible. If none of this is possible to do and you don't know what to do about it then you must do the following:
Cut all of the wires in the bomb. Get the bomb near of a wall or a window. If it is a window then throw the bomb out of the window. If it is a wall put it as close to the wall as possible gather all your coworkers and run off of the floor.
Hope this helps!
ANSWER

EXPLANATION
Recall that,

That is why

is equivalent to

This implies that,

This is the same as,

When we are dividing by

we move the decimal point backwards two times.
This implies that,
Hi!
<h3>To find the slope, use this formula</h3>

<h3>Put in the values</h3>

<h2>The slope is 1 </h2>
Hope this helps! :)
-Peredhel