For what value(s) of k will the relation not be a function? 1.B={(k^2-5k,10),(k+7,4)}
2.R={(k^3-5k^2+3k,-5),(-k,4)}
3.S={(|k+1|+2,4),(8,7)}
Solving any helps, but if you can solve all of them I would be so grateful and I will mark brainliest.

i dont know sorry

Step-by-step explanation:

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;