Answer:
60≥20x+50y
Step-by-step explanation:
Let x = notebooks and y = pens (all per week)
One solution would be x ≥ 1 and y ≥ 1 as at least one per each item per week
The maximum number of black bears sustainable would be around 250 black bears.
Answer:
the third one
Step-by-step explanation:
Answer:
See the explanation below.
Step-by-step explanation:
Percentage of all the students landing point up 
Percentage of student ten landing point up 
Required Difference 

The mixture contains 61.5% of water.
<u>Step-by-step explanation:</u>
Total parts = 4+ 2.5 = 6.5
Parts of water =4
parts of drink = 2.5
Percent of water in the mixture = 4 × 100/ 6.5
= 400/6.5
= 61.53%
It is rounded to the nearest tenth as 61.5%.