Complete  Question 
 The function f determines the cost (in dollars) of a new Honda Accord in terms of the number of years t since 2000. That is, f ( t ) represents the cost (in dollars) of a new Honda Accord t years after 2000. Use function notation to represent each of the following. The cost (in dollars) of a new Accord in 2006?
A. How much more a new Accord costs in 2013 as compared to the cost of a new Accord in 2010?
B. A new Accord in 2013 is how many times as expensive as a new Accord in 2010?
C. In  2016 , some cars cost  $980 more than the cost of a new Accord.How much does the other cars cost (in dollars)in 2016?
Answer:
a
      The cost of  a new Accord in 2013 compared to 2010 is  z  =  f(13) -  f(10)
b
    The magnitude at which the cost of   a new Accord in 2013 is greater          than the cost in 2010 is  
           
c 
     The cost of the other cars is 2016 is   r  =  980 + f(16)
Step-by-step explanation:
From the question we are told that 
      The cost (in dollars) of a new Honda Accord is  f(t)
        Where t is  number of years after 2000
The cost of the  Honda Accord at 2013 is  
         f(2013 - 2000) =  f(13)
The cost of the  Honda Accord at 2010 is  
         f(2010 - 2000) =  f(10)
So the cost difference between 2013 and 2010 is mathematically evaluated as 
          z  =  f(13) -  f(10)
Let constant at which the cost of Honda Accord in 2013 is greater than its cost at 2010 be  x 
So 
       f(13) =  x f(10)
=>      
   The cost of the Honda Accord in 2016 is mathematically evaluated as
           f(2016 - 2000) =   f(16)    
Now the cost of these other cars is  mathematically evaluated as  
          r  =  980 + f(16)