it’s c
Because you do 5n+3 times 5n+3 and you get 25n^2+9
I think the answer is 2
(I hope this helps you!)
Answer:
grains of sand are in the Sahara Desert
Step-by-step explanation:
Given :
The Sahara Desert has an area of approximately 9,400,400 sq.km.
Depth = 150 m
To Find :Approximately how many grains of sand are in the Sahara Desert?
Solution:
Area of Sahara desert = 9,400,400 sq.km.

So, 

Volume of sand =
=

So, 

1 cubic cm holds grains of sand = 8000
holds grains of sand = 
= 
Hence
grains of sand are in the Sahara Desert