Answer:
<h2>The value of 

 is 31 years.</h2>
Step-by-step explanation:
The given equation is formed by different variables, where 
 indicates the period of time in years where the rate of inflation is calculated.
In this case, we have a period from 1980 to 2011. The difference between these years would be the period of time used to find the inflation rate.

Therefore, the value of 
 is 31 years.
 
        
             
        
        
        
Answer:
g(x) = 1/4 f(x)
Step-by-step explanation:
f passes through the origin and has a slope of 1.
f(x) = x
g passes through the origin and has a slope of 1/4.
g(x) = 1/4 x
Substituting:
g(x) = 1/4 f(x)
 
        
             
        
        
        
Y = 2/3x + -8 or y = 2/3x - 8
        
                    
             
        
        
        
Probability that gear 1 will fail = 5/100 (upto 10 years) 
and 8/100 (after 10 years)
Probability that both will fail = 5/100 * 8/100
= 40/10000
= 0.4 %