You are given the dollar value of a product in 2015 and the rate at which the value of the product is expected to change during the next 5 years. Write a linear equation that gives the dollar value V of the product in terms of the year t. (Let t = 15 represent 2015.)

Question

2015 Value: $245,000
Rate:$5200 decrease per year

Answer 1

since the value decreases 5200 each year,
v = 245000 - 5200(t-15) for 15 <= t <= 20