Using exponential function concepts, it is found that the student error is in the subtraction of the day rate, as he forgot to subtract from 100% = 1.
<h3>What is an exponential function?</h3>
A decaying exponential function is modeled by:
![A(t) = A(0)(1 - r)^t](https://tex.z-dn.net/?f=A%28t%29%20%3D%20A%280%29%281%20-%20r%29%5Et)
In which:
- A(0) is the initial value.
- r is the decay rate, as a decimal.
In this problem, the initial value of the computer is of A(0) = 1500, while it decays at a rate of 15% a year, hence r = 0.15 and the equation is:
![A(t) = A(0)(1 - r)^t](https://tex.z-dn.net/?f=A%28t%29%20%3D%20A%280%29%281%20-%20r%29%5Et)
![A(t) = 1500(0.85)^t](https://tex.z-dn.net/?f=A%28t%29%20%3D%201500%280.85%29%5Et)
Or equivalently, as a sequence:
![a_n = 1500(0.85)^{n-1}](https://tex.z-dn.net/?f=a_n%20%3D%201500%280.85%29%5E%7Bn-1%7D)
Hence, it is found that the student error is in the subtraction of the day rate, as he forgot to subtract from 100% = 1.
More can be learned about exponential function concepts at brainly.com/question/25537936
Step-by-step explanation:
Area squares the unit of length. in this case, none of these are area
(By the way is this question tagged with a picture)
Answer:
x =105002
Step-by-step explanation:
5x=525010
Divide each side by 5
5x/5=525010/5
x =105002
A is correct because 445.50 Divided By 150 is Equal to $2.97.