Use the depreciation formula.

Where 'p' is the principal value, 'r' is the rate it depreciates, and 'n' is the time. Just plug in what we know:

Simplify by subtracting:

Simplify the exponent:

Multiply:
Answer:
the triangle flipped over the y axis
Answer:
x = 3 ± sqrt(11)
Step-by-step explanation:
x^2 - 6x + 9 = 11
Recognizing that this is a perfect square trinomial
(x-3) ^2 =11
Taking the square root of each side
sqrt((x-3) ^2) = ± sqrt(11)
x-3 =± sqrt(11)
Add 3 to each side
x = 3 ± sqrt(11)
The is c for this question
<h2>
Greetings!</h2>
Answer:
$12.60
Step-by-step explanation:
To find this, you need to remember this equation:
Starting amount x 
Plug these values in:
18 x
= 12.6
So the clearance price was $12.60!
<h2>Hope this helps!</h2>