### Home > INT2 > Chapter 1 > Lesson 1.2.3 > Problem 1-54

1-54.

Read the Math Notes box in this lesson and then answer the following questions. The cost of a large flat-screen television is decreasing 20% per year.

What is the multiplier?

Subtract the percent from

. If a

-inch flat-screen now costs , what will it cost in three years? The equation for an exponential function is:

initial valuemultiplier# of yearsUsing the same rate, what did it cost two years ago?

Use the same equation as (b) and do not change the multiplier.

Write the equation of a function to model this situation.