Im sorry all i know is that the lines are parallel and A and B are definitely on the line, i believe the answer is D
Answer:
A
Step-by-step explanation:
The profit for selling <em>x</em> pairs of shoes is given by:

And we want to determine the number of pairs that needs to be sold in order to maximize profit.
Since the function is a quadratic with a negative leading coefficient, the maximum profit will occur at its vertex point. The <em>x-</em>coordinate of the vertex of a quadratic is given by:

In this case, <em>a</em> = -4, <em>b</em> = 32, and <em>c</em> = -39. Substitute and evaluate:

So, in order to maximize profit, only four pairs of sohoes should be sold.
Our answer is A.
The temp. rose by 17 degrees and then fell by 17 degrees. This means that the net change in temp over the course of the day was zero.
Your answer is (x-4), hope I helped! :)