Answer:
-1/2
Step-by-step explanation:
the slope of a line that is perpendicular to a given equation of a line, is the negative reciprocal of the original slope
Answer:
Given expression:

Separate the variables:

Reduce the first fraction:






Therefore:

If you substitute the values for x and y you will find that D. is the only function which satisfies the given values.
In order to solve this problem, you double the sales price!
$17.50 x 2 = $35.00
The original price would be $35.
Hope this helps!