Answer: -3/2
Step-by-step explanation:
The axis of symmetry, and thus the x-coordinate of the vertex, is given by 
So, the answer is 
This is easy are you even in highschool lol jk its 12*16 becuase their are 16 rows and r represents the rows SO 192 BOOKS <==== Answer.
It is evaporating into a gas, and they will move faster
Answer: 4 feet
Step-by-step explanation: