A car is sold for $20,000. After one year, the value of the car is $11,000. Write an exponential function y to determine the value of the car after x years if the rate of decrease is the same each year.

y=20000(0.55)x

Step-by-step explanation:

Given data

The initial price of the car =$20000

The final price of the car after 1 year=$11000

The change in price is expressed as

=11000/20000

=11/20

=0.55

Hence the change for x years is

=0.55x

Let the total amount of the new price be y

Therefore the expression for the new price is

y=20000(0.55)x

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0

step-by-step explanation:

4227473658779875563886538705958641728563470543621287463824132573847969p05749365273847906970680574936214