SOLUTION: The price of an item was $30 its first year,$66 in its 4th year, and it can be assumed that its price will continue to increase linearly. Write a simplified equation describing the

Algebra ->  Linear-equations -> SOLUTION: The price of an item was $30 its first year,$66 in its 4th year, and it can be assumed that its price will continue to increase linearly. Write a simplified equation describing the      Log On


   

Question 249131: The price of an item was $30 its first year,$66 in its 4th year, and it can be assumed that its price will continue to increase linearly. Write a simplified equation describing the relationship between cost and year. find the cost for the 7th year
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
(66-30)/4=36/4=9 dollars per year is the increase.
c=9x+30 x being the year.
Example:
c=(9*7+30)=(63+30)=$93 would be the cost in the 7th. year.