For each 4 hour interval 800 bacteria grow. at 12 midnight there will be 16,400 bacteria.
So the 12 would be a positive and the 5 would be a negative, because when you download something your adding to your music collection and when you delete something your taking it away thus a negative.
(hope this helped)
Answer:
(B) 
Step-by-step explanation:
Given: From the figure, it is given that the length of the base is 4 feet and slant height is 7 feet.
To find: The Surface are of Pyramid.
Solution: From the figure, it is given that the length of the base is 4 feet and slant height is 7 feet.
Now, surface area of the Pyramid is given as:

where p is the perimeter and l is the slant height.
Now, area of base is given as:


And, the surface area is given as:



Hence, option B is correct.
2+9=11
5+88= 93
please let me know if you need me to explain your just adding!