Answer:
1) x=8, y=138
2) x=110
Step-by-step explanation:
Answer:
X=132-13A/A, A cannot equal 0
A=132/X+13, X cannot equal -13
Answer:
(0.2278, 0.3322)
Step-by-step explanation:
Given that out of 400 people 112 agree and 288 disagree
Proportion of people agreeing = 

For confidence interval 90% we have critical value as
1.645
Margin of error =1.645*SE
=
Confidence interval 
Answer:
2
Step-by-step explanation:

8/8 hours because he can play for a longer amount of time