Hello!
The equation for an exponential deprecation model like this is , where a is the starting value, x is the number of years passed, and r is the amount the value deprecates each year.
We know what a and r are: a = 1600, as that is the original cost of the computer, and r = .18, as that's how much it decreases by. Substitute these two into the equation.
We get . Now, subtract 1 - .18 to get our final answer.
is therefore the final model.
Hope this helps!
Using the profit function, it is found that:
a) She earns $36 after 25 years.
b) The function was shifted right 4 units and up 1 units.
<h3>What is the profit function?</h3>
The profit, in x years after 2015, is given by:
Item a:
She earns $36 after x years, considering x for which p(x) = 36, hence:
She earns $36 after 25 years.
Item b:
The new function is:
At the domain, we have that , that is,
, hence it was shifted right 4 units.
At the range, we have that , hence it was shifted up 1 unit.
You can learn more about functions at brainly.com/question/24380382
