Question

The value of Sara's new car decreases at a rate of 8% each year. Write an exponential function to model the decrease in the car's value each month. Write an exponential function to model the decrease in the car's value each week. Write an exponential function to model the decrease in the car's value each day. What relationship is there between the amount of decrease and the time interval measured?

Answer 1

8% less
100-8=92


P=present amount
F=future amount=f(t)
t=time in years
rate of decay is 8% or times 92%

$F=P(0.92)^t$ is the equation or
$f(t)=P(0.92)^t$ is the equation or