Answer:
 or
 or 
Step-by-step explanation:
Using the zero product property, first step is to set the given equation,  , to zero. Then factorise the left side.
 , to zero. Then factorise the left side.
Thus,

Subtract 2 from both sides


Factorise the left side



Find the solution

Or

 
 
Or



The answer is:  or
 or 
 
        
             
        
        
        
Answer:
10⁴ seconds
Step-by-step explanation:
Given that,
A person breathes  in about cubic meters of air per second.
 in about cubic meters of air per second.
We need to find time taken to breathe 2.5 cubic meters of air.
In 1 sec =  m³ of air breathe
 m³ of air breathe
Let in x seconds, 2.5 m³ of air taken by the person.

Hence, in 10⁴ seconds 2.5 m³ of air is taken by the person.
 
        
             
        
        
        
Answer:
The number of subscribers in 2008 is 110,845,988
Step-by-step explanation:
The number of cell phone subscribers in Arlington, in t years after 1985, can be modeled by the following equation.

And which N(0) is the number of subscribers in 1985 and r is the rate it increases per year, as a decimal.
In 1985, there were 285 cell phone subscribers in Arlington.
This means that 
The number of subscribers increased by 75% per year since 1985. 
This means that 
So

Find the number of subscribers in 2008. 
2008 is 2008-1985 = 23 years after 1985. So we have to find N(23).

The number of subscribers in 2008 is 110,845,988
 
        
             
        
        
        
Answer:
Even
Step-by-step explanation:
Ends in 4