%change=100(final-initial)/initial
%change=100(25-40)/40=-37.5%
So Denise received a discount of 37.5% off the regular price.
Answer:
Step-by-step explanation:

Hence proved!
I’m not sure but I think it’s sample x
Answer:
The volume of P is <u>1728 cubic yards.</u>
<u></u>
Step-by-step explanation:
For similar shapes, the ratio of volumes are defined as:
= 
where h1 and h2 are the heights of each pyramid respectively.
We know that the scale factor of P to Q is 6:1 i.e. the ratio of heights is also 6:1. And the volume of Q is given as 8 cubic yards. so, using the relation defined above we can write:
= 
= 
Vp = 6³ * 8
= 216 * 8
Vp = 1728 cubic yards
The volume of P is <u>1728 cubic yards.</u>
Answer:
No solution
Step-by-step explanation:
When put in a graphing calculator, the lines are parallel and will never intersect, therefore there is no solution.