### Home > CC3MN > Chapter 6 Unit 10 > Lesson INT1: 6.4.2 > Problem6-144

6-144.

The current cost of a $55$-inch HDTV is \$$1500$ and decreasing by $15$% per year.

1. What is the multiplier?

If the cost decreased by $15$% each year, the new cost would be 85% of the previous year.

$0.85$

2. What will a 55-inch HDTV cost in four years?

In one year the cost will be $\1500(0.85)$.
In two years the cost will be $[\1500(0.85)](0.85)$.
Continue this pattern.

3. Write an equation to calculate the cost in $n$ years. What does each of the factors in your equation represent?