The answer is letter is C. 19.5 Because you divide
Answer:

Step-by-step explanation:
To find
, we need to eliminate
in this system of equations:
(1)
(2)
From (1) and (2):


Then, we equalize both expressions and solve for
:




Answer:
20n
Step-by-step explanation:
Multiply square feet per person times the number of persons to find square feet.
The units analysis looks like this:

Answer:
36
Step-by-step explanation:
6 squared