Answer:
Step-by-step explanation:
3n=3
Divide by 3
N=1
I'm pretty sure the answer is 40
Answer: 299
Step-by-step explanation:
Given
Family removes one-third of tress in June as much as they dd in July
They remove twice the number of July in august
Suppose they removed x trees in July
for June it is, 
for August, it is 
If they removed less than 1000 tress in 3 months

So, maximum number of tress removed in July is 299
Answer: it is invalid
Step-by-step explanation: it is invalid because the data table has 30 out of 100 people stating that they prefer to view movies in theater. This does not have the same ratio as 300 out of 400, and would only work had he said 300 out of 1000. Thus, he is incorrect in his inference.