Only 25 and 28 are functions.
A function must have only one y value per x value. For 26, the y value of 0 and multiple others have two different y values. For 27, all x values less than 0 have multiple y values.
Answer:
Im pretty sure ur answers would be
x= -32/27 and X= -46/27
Step-by-step explanation:
So srry if im wrong tho
Answer: (141.1, 156.48)
Step-by-step explanation:
Given sample statistics : 


a) We know that the best point estimate of the population mean is the sample mean.
Therefore, the best point estimate of the mean weight of all women = 
b) The confidence interval for the population mean is given by :-
, where E is the margin of error.
Formula for Margin of error :-

Given : Significance level : 
Critical value : 
Margin of error : 
Now, the 90% confidence interval for the population mean will be :-

Hence, the 90% confidence interval estimate of the mean weight of all women= (141.1, 156.48)
1/16=1,003, so
senior= 1003
infants=3009
children=6018
adults=6018
Letter A
because we should add the two smaller number in the radical and if the sum equals to the other one. Then, it is a right triangle