Out of 400 students sampled, 300 of them said that they hoped to have
children someday. With 68% confidence, what is the approximate percentage
of the students in the population who hope to have children someday?
A. 68.5% to 81.5%
B. 72.8% to 77.2%
c. 66.3% to 83.7%
D. 70.7% to 79.3%

correct answer was 0.5

b: y = 2x + 2

step-by-step explanation:

y = 2x + 1

we want a line that is parallel, so it will have the same slope

the line is in the form y= mx+b, so the slope is 2

we have a slope and the y intercept (0,2)

since x is 0 we know the y point which is the y intercept

we can use y= mx+b to write the equation of the line

m is the slope and b is the y intercept

y = 2x +2

we are given scale of 2 units.

on graph paper the space is 2.5 cm.

length of glass = 8 units.

8 units = 2 units +2 units +2 units +2 units.

each 2 unit is = 2.5cm.

therefore,

8 units = 2 units +2 units +2 units +2 units = 2.5+2.5+2.5+2.5= 10cm.