Answer:
Function for given situation is : 
Value of computer after 4 years = $720.3.
Step-by-step explanation:
Given that the value of a $3000 computer decreases about 30% each year. Now we need to write a function for the computers value V(t). then we need to find about how much will the computer be worth in 4 years.
It clearly says that value decreases so that means function represents decay.
For decay we use formula:

where P=initial value = $3000,
r= rate of decrease =30% = 0.30
t= number of years
A=V(t) = future value
so the required function is 
or 
Now plug t=4 years to get the value of computer after 4 years.


Hence final answer is $720.3.
 
        
                    
             
        
        
        
That is 30/80 that reduces down to 3/8 
How u get it is 2 times 15 over 5 times 16 then divide 30 and 80 by 10 to get 3/8
        
                    
             
        
        
        
Answer:
x>6
Step-by-step explanation:
2x > 16-4
x > 12/2
x > 6
 
        
                    
             
        
        
        
Given:
The expression is:

It leaves the same remainder when divided by x -2 or by x+1.
To prove:

Solution:
Remainder theorem: If a polynomial P(x) is divided by (x-c), thent he remainder is P(c).
Let the given polynomial is:

It leaves the same remainder when divided by x -2 or by x+1. By using remainder theorem, we can say that
 ...(i)
              ...(i)
Substituting  in the given polynomial.
 in the given polynomial.


Substituting  in the given polynomial.
 in the given polynomial.



Now, substitute the values of P(2) and P(-1) in (i), we get




Divide both sides by 3.


Hence proved.