Substitute the numbers in the equation:

Since L=5in, W=4in and H=8in:

Therefore, the volume is equal to 160 inches cubed.
There are multiple solutions and they will vary.
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It would be A because -2 times +6 equals -12
390.20 is the answer because 4%of 2880 is 115.20 plus 275.00 is 390.20