The answer to Part A is :
D. w ≥ 6 inches
The answer to Part B is :
C. w ≥ 9 inches
Well, I cheated on this one. I used the free app tiger algebra and this is what they came up with. So check it out. I hope it works.
(5/3,-1/15)
Good luck
The rate that you are walking at is 100 meters per minute. In two kilometres there are 2000 meters. It takes 10 min to walk one kilometre. Therefore the answer is 20 minutes. Just divide 2000 by 100 to get the time
To answer this you would first start with a representation of the situation. See the attached step 1. Use this inequality to find the number of bagels he can get by solving it.
See step two in the attached picture for the work necessary to solve this.
The answer is not a whole number, so you have to round down to make it a whole number of bagels.
The answer is he could by seven or less bagels. You should substitute this in to prove it works.
Answer: The student's estimate is off by 12%