Answer:
Not 100% sure but i think its A
Step-by-step explanation:
Answer: 20
Step-by-step explanation:
Formula to find the minimum sample size(n) when prior population standard deviation
is known.
, where E = Margin of error ,
= Critical z-value for c confidence interval.
Given : E = 225 g ,
g
Critical z value for 90% confidence = 1.645
Now, 


Hence, the required minimum sample size = 20
A=2-b
2-b/b=3
2-b=3b
B=1/2
A=3/2
A-b=3/2-1/2=1
Answer is 1
Y=-3/2x+4
The slope is -3/2, since Kerry traveled three feet and only went down 2.
The y intercept is 4, since she started four feet above the origin