The system of linear equations y=2x-1 and y=4x-1 is graphed.
2 answers:
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Answer:
3/2 mph
Step-by-step explanation:
=
cross-multiply: 8r = 12
r = 12/8 or 1.5 mph
I set this up as an inequality, 
. If you take the cubed root of 800, you get the lower bound of the side length, which is 9.2. Then I just worked my way up until I hit the first number that put me over a volume of 800. That number is 9.29, because 9.28 cubed is 799.1 (not high enough) and 9.29 cubed is 801.8. Therefore, the bounds of the sides exist within a conjunction: 
. That's the best I could come up with to help on that one. Wasn't sure if there was another method you were taught at school. I just used common sense more than any rule.