We need to use the formula to find Margin of Error but through the sample proportion, that is
We will use a 95% confidence interval, that is a z value of 1.96 (Search in a Normal distribution table)
A) For A our 
(proportion) is equal to 0.45. So applying the formula,
B) We make the same of point A, but change our proportion to 0.35
c) We need to calculate the SE through proportion for 0.1, that is
Then our Error is given by,
Area of rectangle: b*h
12*5=60
10*5=50
(60*4)+(50*4)=440
The total surface area of the visible sides of the boxes would be 440 square inches.
Hope this helps!
Answer: a. Area b. 4222.26
n, n + 2 - two consecutive odd integers
196 - the sum
The equation:
n + (n + 2) = 196
n + n + 2 = 196 |subtract 2 from both sides
2n = 194 |divide both sides by 2
n = 97
n + 2 = 97 + 2 = 99
Answer: 97, 99.
3s + 135 = 4.5s + 45
Now move the variables and coefficients
135 = 1.5s + 45
And then the numbers
90 = 1.5s
Simplify
90/1.5 = 1.5s/1.5
60 = s
Hope this helps!
