The exponential equation that models this situation is:
.
<h3>What is an exponential function?</h3>
A decaying exponential function is modeled by:

In which:
- A(0) is the initial value.
- r is the decay rate, as a decimal.
For this problem, the parameters are:
A(0) = 18000, r = 0.15.
Hence the equation for the value of the car over the next 5 years is:


.
More can be learned about exponential functions at brainly.com/question/25537936
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Roughly 30 minutes to fill the bathtub due to vaporization.
This would be your answer 10x-8, x+8
Answer:
45%
Step-by-step explanation:
Since he drove 54 miles out of 120 in the first hour, the equation for this would be 54/120×100. This equals 45 and that is the percentage