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

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) (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.
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