Answer:
<h2>The graph in the attachment.</h2><h2>The inverse is not a function.</h2>Step-by-step explanation:
The graph of the function and its inverse are symmetric with respect to the line y = x.
The inverse is not a function because for x = 3 we has two values of y: -3 and -4 (look at the picture).
<em>A function is a relation that associates each element x of a set X to a single element y of another set Y.</em>
Numerator is 3 and denominator is 5. So, we divide the sales price by 3 and we multiply by 5 to get the whole fraction, or 100%.
Your regular price sounds recurring, so you might have made a mistake copying.
The answer for what you've got is 94.633333...