Answer:
I think the answer might be 543.62
Step-by-step explanation:
I did the math and since yo just use the formula of a rectangular prism which is V=L*W*H it should give you 543.62, i hope it helps and I'm sorry if it didn't. Have a great day!
The equation of a line of the slope-intersection form is given by:

Where:
m: It's the slope
b: It is the cut-off point with the y axis
If two lines are parallel then their slopes are equal.
We have the following line:

Thus, the slope of the line is -5.
Therefore a parallel line is of the form:

We replace the point 

Finally, the equation is of the form:

Answer:

1. 32.66
2.3.25
3.4.103
4.0.42
5.6.109
6.6.1
7.184.02
8.905.26
if Joyce saved $70
at 75% off, Joyce saved 25%
so, $70 is 25%
To find the total price which is 100%, multiply $70 by 4 ( because 25% x 4 = 100% )
so the original price is $70 x 4 = $280