### Home > GB8I > Chapter cc46 > Lesson cc46.4.2 > Problem 6-144

6-144.

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

What is the multiplier?

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

Write an equation to calculate the cost in

*n*years. What does each of the factors in your equation represent?

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

0.85

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.

Use the pattern in part (b) to write your equation.